55 Lessons Learned About Science Communication Around the World During COVID-19
The following insights, contributed by members of the Aspen Global Congress on Scientific Thinking & Action, offer local experts' best practices for communicating about a global health crisis with the public in nuanced and regionally specific ways.
Senegal
Is the messenger as important as the message? Pandemics such as COVID-19 and the flood of online misinformation underlie the critical need to elevate the voices of African science leaders. African communities have talented experts they can rely on to access reliable information based on facts, if only the right platforms are provided to them. Not only do we need to share the right information and understand our target audiences, we must pay close attention to those who deliver our messages, when planning any communication strategies.
Fara Ndiaye, Deputy Executive Director, Speak Up Africa
Brazil
The first lesson from the current pandemic for science communication in Brazil is that there is no such thing as redundancy. It doesn't matter how many times one says or explains something—about the importance of social distancing, or the uselessness of chloroquine—there is always someone you didn't reach the first time, and someone you reached but wasn't paying attention then. You have to repeat it, over and over again. Another lesson is that it actually works. Sometimes the onslaught of misinformation can make one think that the effort is futile. It isn't: if you listen carefully, you can find the results—even if only after a lot of repetition.
Natália Pasternak Taschner, President, Instituto Questão de Ciência (Question of Science Institute)
Carlos Orsi, Editor-in-Chief, Questão de Ciência (Question of Science) Magazine
Colombia
The pandemic has exposed the strengths and weaknesses of journalism, but it is also teaching, in real time, how to do good scientific journalism. In Colombia we have good results with the strengthening of our collaborative networks and working with colleagues from other countries and other media. We listen to science and give it a voice in the media. We are also looking at information from different angles. But we are left with challenges: journalists must be trained in scientific journalism, scientific journalism needs to be across all journalistic areas, and we need to learn to rigorously fact-check.
Ximena Serrano Gil, President, Asociación Colombiana de Periodismo Científico (Colombian Association of Science Journalists)
Ukraine
Ukraine started quarantine on March 25, 2020 when there were only 10 cases of COVID-19. And already on May 22 the quarantine was weakened and economic recovery began. Kyiv Mayor Vitali Klitschko's address "Don't wander the streets" worked well in the capital, the most populated city. We also managed to develop our own PCR tests within two weeks. I managed to provide comments on the origins of the new strain of coronavirus to the leaders of public opinion and it helped to prevent conspiracy theories and to stop the panic. Aspen Institute Kyiv organized a series of online events and activities to inform society about the pandemic, to help with medical supplies, and to assist the needy. In general, the COVID-19 pandemic exposed all the shortcomings and bottlenecks of the country's medical sphere. The positive outcome is that everybody learned about PCR and realized how important good science is for society.
Nataliya Shulga, CEO, Ukrainian Science Club
New Zealand
This pandemic has highlighted how a scientific issue connects every discipline and when those from seemingly different camps work collaboratively and innovatively, a powerful alchemy can result. I think New Zealand's response to COVID-19 has shown what is possible when good science and good communication come together. We have had extraordinary leadership in this country that not only invests in science, but invests equally in the public's understanding of it. NZ citizens were brought into the process of it every single day through effective storytelling across multiple platforms. Walls between science and society melted away, and no one had to question the reasons behind what we were being asked to do to protect ourselves and each other because the science was embedded in a crystal clear story. And at the heart of that story is the message to trust in science like your life depends on it—because it does.
Gianna Savoie, Director of Filmmaking, Center for Science Communication, University of Otago
Portugal
COMCEPT tries to engage with the public in person and via digital social networks. In the week before the lockdown we organized a public meeting, some style of "Skeptics in the Pub," about the new coronavirus. The speaker was the president of a medical association and presented to the public the best data available at the moment regarding SARS-CoV-2 and COVID-19. During the lockdown, we used social media to promote reliable information about the disease, shared official data from the Government, asked the public to participate in online academic studies, and debunked conspiracy theories.
João Lourenço Monteiro, Vice President, COMCEPT: Comunidade Céptica Portuguesa (Portuguese Skeptical Community)
Australia
Australia has … so far … come through the coronavirus pandemic without suffering the appalling figures seen elsewhere: Australia's death rate per million currently stands at 4, compared with 300 deaths per million in the U.S.A.; 542 in the UK; and a horrifying 800+ in Belgium. Australia is not alone in achieving such relatively low figures, but in Australia it does seem to be thanks to a fairly (but not perfect) early intervention to stop infections through border controls and lockdowns, supported by a largely cooperative public. While early communication efforts by governments were marked by contradictions and confusion, one success has been the national broadcaster, the Australian Broadcasting Corporation, in spreading factual information through a range of media platforms. In particular are the activities of Norman Swan, presenter of ABC Radio National's Health Report, who has become a key voice of coronavirus information. His daily CoronaCast podcast quickly became one of the most downloaded science podcasts around the world, and though presentations were not without dire predictions, his softly-spoken manner generally gave science communication a voice that seemed sincere and proved reliable.
Tim Mendham, Executive Officer, Australian Skeptics
Israel
There are two salient features of the corona-related fake news in Israel: they give the reader meaning and hope. I think that if we talk more about the interface between science and moral values, we might be able to fill in the needs currently filled with prophetic, pseudo-medical, and conspiracy messages. When communicating science, a curve is not just a curve; it is also a story about solidarity.
Ayelet Baram-Tsabari, Associate Professor,Faculty of Education in Science and Technology, Technion – Israel Institute of Technology
Nigeria
COVID-19 has exposed the need to diversify the approaches and languages used to communicate science. In Science Communication Hub Nigeria and African Science Literacy Network, our scientists and fellows are using local languages to debunk science misconceptions and disinformation about COVID-19 through written articles, myth busters, and weekly webinars streamed live on Facebook and YouTube. In addition to disseminating good science, this approach has made it easier for us to understand how local communities view science and scientists, which in turn enables us to deliver content appropriate to these communities.
Mahmoud Bukar Maina, Founder, Science Communication Hub Nigeria
Czech Republic
It is not a secret in the world of science communication that, for many, accepting the facts has little to do with facts themselves. This quiet truth has been brought out into the spotlight even more so now during the pandemic. Many of us received the lesson that we must communicate with the human first before we try communicating the science to them.
Claire Klingenberg, President, European Council of Skeptical Organizations (ECSO)
U.S.A. / Mexico
The pandemic has united science communicators more than ever. It has spurred many fruitful collaborations, such as the COVID-19 Virtual Forum organized by the Mexican Network of Science Journalists with all the science communication associations in Latin America and Spain. In Mexico and the U.S., we are all fighting misinformation while keeping up to date with the freshest science, policies, and society's response. This is the time to show why science journalism is important by stepping up to the plate.
Rodrigo Pérez Ortega, Founding Member, Mexican Network of Science Journalists
Switzerland
Switzerland has managed to flatten the curve substantially and avoid a collapse of the public health system. Now that the country is slowly opening up again, the public discourse increasingly revolves around the question of "what was all this fuss about, when nothing happened?!" We have a term for this frustrating phenomenon: Pandemic Paradox. The successful management of outbreaks can lead to a decrease in public trust in communicators based on the perception that they were overreacting. However, we are aware of it and its origins are well studied, which gives us an assortment of tools to combat it.
Angela Bearth, Research Scientist, Consumer Behavior, Department of Health Sciences and Technology, ETH Zürich
Cameroon
The pandemic has recalled the vital role of science communication in times of crisis. Africa in general and Cameroon in particular have been spared for the moment from the catastrophe so feared by the whole world. This stems from the good collaboration among media, decision makers, and researchers who have positively influenced the apprehension of the threats by the general public as well as their behavior, which is a determining factor for the efficiency of the response.
Stéphane Kenmoe, Scientist, Science communicator, and television personality
Canada
Science communication is always challenging but even more so in the COVID-19 era since so much about the disease is unknown. Because of my media presence and the mandate of our Office to "demystify science for the public," I am bombarded by questions from morning to night. Unfortunately, the answers almost always have to be qualified with "ifs," "buts," and "maybes," which is not very satisfying.
I think I can confidently say that self pleasuring will not reduce the chance of contracting COVID-19 as some bloggers claim, and I can also assure people that hanging laundry on a clothesline is safe and advise them that putting the newspaper in the oven to disinfect it is a bad idea. But when questions arise about handling mail or groceries, or the effectiveness of masks, the uncertainties creep in.
Then there is the issue of the numerous conspiracy theories ranging from Bill Gates's supposed plan to decimate the population to the disease being caused by 5G antennae. This puts us in a position of having to prove a negative, which is very difficult to do. My usual approach is to ask proponents questions about the number of conspirators that would have to be involved, their possible motives and the source of the information. Sometimes if you give them the rope they will hang themselves.
Joe Schwarcz, Director, Office for Science and Society, McGill University
India
The clamp downs, the lock downs,
the prayers were all tried
Lamps were lit, plates banged, and
flowers were showered from skies
Millions were spent, sugar pills were
dispensed, grandmas' soups concocted
Herbs were boiled and breathing taught
Alas nothing worked, they all came to
naught
Millions walked, hundreds died.
All nation builders migrating to home
villages
The rulers were deaf, the nation was
blind to one of the longest shut downs
of its kind!
But nothing worked, neither the herbs
nor the sugar pills or the urine of the
mother cow!
1,300 million Indians abandoned to their fate now!
Narendra Nayak, President, Federation of Indian Rationalist Associations
U.K. / China
COVID-19 has brought the public to witness first-hand science-in-the-making in a multi-centred world and allowed the scientific community to participate in real-time sense-making with various publics on risks and responsibilities. To borrow the term from Silvio Funtowicz, COVID-19 has ushered everyone into an era of "post-normal" science communication, in which the contents being communicated are contingent, objectives conflictual, outreach global, consequences personal, and (re)actions urgent. This further highlights the need to co-develop new approaches of transnational scientific dialogue in and with China, where public engagement is still at a nascent stage.
Joy Yueyue Zhang, Senior Lecturer in Sociology, School of Social Policy, Sociology, and Social Research, University of Kent
U.S.A.
I'm inspired by the work of Avi Schiffmann, a 17-year-old high school student in Seattle, Washington, who took it upon himself to create a well-designed and up-to-do-date website for tracking COVID-19 infections and deaths from around the world. Remember when the outbreak first happened and no one could get reliable information in one place? This kid—who had been coding since he was a child—created a massive data-scraping program that allowed a centralized location for this crucial info. And it's gotten millions of views. Now that's science communication!
Lee McIntyre, Research Fellow, Center for Philosophy and History of Science, Boston University
Syria
In Syria, the COVID-19 situation is messy and unclear and lacks transparency. From one side, official numbers show only 109 cases and four deaths since the outbreak; on the other side, these numbers are widely criticized by experts as well as by the public because of low testing and lack of official communication.
The nine-year-long war has hugely destroyed the medical infrastructure in Syria and pushed the majority of medical staff to leave the country. Despite these facts, the country went into only a partial lockdown and tried to minimize interactions among its population with shy measures.
The big absence in these measures was indeed "communication." None or only a few official institutions tried to keep the population updated about the evolution of the disease inside the country. This factor pushed many civil society organizations to take over, covering topics such as self-protection, molecular biology, and pharmaceutical updates. Moreover these initiatives, mainly via Facebook, fought against misleading information such as conspiracy theories and unethical drug use. In the near future, international organizations should learn from the Syrian example and pay more attention to the impact of these volunteer-based organizations that could replace official institutions for science communication during wartime.
Mouhannad Malek, Founder and Chairman, Syrian Researchers
Spain
From the skeptical movement, we noticed that at first almost everybody was very cautious, and few dared to screw it up with loose nonsense. But right away, some started placing the blame on their favorite enemy: Trump on China, China on Trump, or electromagnetic or 5G sensitivity—allied to the anti-vaccination, flat-earth, and Germanic New Medicine leagues. And then there are the crazy remedies pulled out of a hat.
Juan A. Rodríguez, Secretary, ARP–Sociedad para el Avance del Pensamiento Crítico (Society for the Advancement of Critical Thinking); Editor, El Escéptico (The Skeptic) magazine
Argentina / Brazil
Science communication and journalism have been reinvented in South America. More people are giving their time to contribute to science communication and are also actively engaged in teaching society how to be fact-checkers. Science popularization was reborn in small movements that spread checked news that "goes viral" through WhatsApp messages where, until then, Fake News had a clear ground. Low-cost podcasts boomed, shared sometimes even in the old way, through car loudspeakers in the street. Journalists, science communicators, and researchers became more active in professional networks. They also abandoned the practice of competing against each other, creating new ways to collaborate. Now, they share hard-to-access data through virtual meetings, pre-prints, or private communication, offering experts' contacts and valuable advice. This is the new normal.
Roxana Tabakman, Health Writer and Science Journalist, Red Argentina de Periodismo Científico (RADPC) (Argentinian Network of Science Journalism); Rede Brasileira de Jornalistas e Comunicadores de Ciência (RedeComCiência) (Brazilian Network of Science Journalists and Communicators)
Japan
In Japan, the lack of outreach from scientists and science communicators during the Fukushima nuclear power plant accident following the Great East Japan Earthquake in 2011 led to a growing distrust of science professionals. In this year's COVID-19 pandemic, many scientists are disseminating information online, and science communicators at research institutions are actively providing learning tools for children who are on standby at home. While politicians have yet to learn the importance of science communication, the public is learning how to seek out the information they need.
Masataka Watanabe, President, Japanese Association for Science Communication
Jordan
In these unprecedented times, building the case for science and research is of utmost priority. Therefore, at Phi Science Institute in Jordan, we aim to handle this responsibility very seriously on the regional and global levels by providing full coverage of the latest trusted scientific news in Arabic for the Arab world; turning our Research and Innovation Summit 2020 fully virtual to connect youth and experts for science from all across the region and enable them to work on joint research projects at this hard but unique time; and working with our artificial intelligence lab on healthcare A.I. products related to COVID-19.
Safa Khalaf, Community Outreach Officer, Phi Science Institute
U.S.A.
Initial response to the outbreak in the U.S. was striking for the high degree of support for and compliance with restrictions on public activity. Scientists were centerstage in their role advising government leaders. But U.S. opinion has been shifting. There are now growing partisan divisions over the risk COVID-19 poses to public health as well as over social distancing measures aimed at slowing the spread of the disease. And, unlike years past, a partisan imprint now extends to public confidence in medical scientists to act in the public interest.
Cary Funk, Director, Science and Society Research, Pew Research Center
Romania
Governments all over the world have realized the importance of good communication with the public. And they have also realized the impact that false news and misinformation can have on their efforts. I work in promoting vaccination, and until now, antivaccine ideas were considered fringe and limited. The pandemic has shown that anyone can start to become a source of misinformation, and we need to combat misinformation quickly and efficiently. This lesson, hopefully, will not be forgotten.
Ovidiu Covaciu, Administrator, Vaccinuri si Vaccinare (Vaccines and Vaccinations); Founder, Coaliția România Sănătoasă (Romania Healthy Coalition); Producer, Sceptici în România (Skeptics in Romania)
Russia
Just a year ago, we launched a specialty in communication in medicine and biotechnology in our SciComm M.Sc. program. It's been a long time coming! Like never before, we are facing the fact that science communication matters, and the lack of information only increases fears and frustrations.
Daria Denisova, Director, Science Communication and Outreach Office, ITMO University
South Africa
Novel ways of sharing the science of COVID-19 with children: In South Africa (and many other countries) scientists have partnered with authors and illustrators to create a range of storybooks, comics, and infographics (in many indigenous languages) to help children understand the pandemic.
The pandemic is also an infodemic: As much as there is a need (and demand) for scientific expertise, misinformation may also flourish when people are scared and uncertain. Combating misinformation is a complex task. It is important to understand the reasons why rumours and false claims spread, and to be thoughtful and respectful when trying to correct them. Here is some advice.
Marina Joubert, Senior Researcher, Centre for Research on Evaluation, Science and Technology (CREST), Stellenbosch University
U.K.
As a researcher of so-called alternative medicine (SCAM), I should have expected it—but when it did arrive, it came as a surprise nonetheless. I am talking about the number of snake-oil salesmen putting their ugly heads above the parapet. After the pandemic had been declared, it took just days for the promotion of corona quackery to start: acupuncture, chiropractic, herbal tinctures, homeopathic remedies, colloidal silver, essential oils, dietary supplements, and many more. The entire panopticum of SCAM was on display. This was when I decided to relentlessly name and shame the villains on my blog (edzardernst.com). Today, I must have posted over 40 articles about the "corona snake-oil brigade."
The second surprise was positive, I am glad to say. The amount of support I received was unprecedented. Hundreds of comments were posted by people who agreed that now it was more important than ever to disclose this quackery, point out what harm it does, and prevent the public from falling for it (at one stage, my humble blog was even quoted by U.S.A. Today). Many friends and colleagues joined in and wrote about SCAM merchants attempting to make a fast buck by misleading the public. But the public was far less gullible than the charlatans had hoped. My impression is that the snake-oil craze even provided a significant boost for critical thinking. The pandemic is doing untold, tragic damage, but it has also helps to explain to consumers how crucially important real science is and how devastatingly dangerous pseudoscience can be.
Edzard Ernst, Emeritus Professor, University of Exeter
"How can we sustain this appetite for science? Highlight the WHY more than the HOW and WHAT."
Pakistan
Pakistan is actively combating the COVID-19 pandemic by effective lockdowns. People are well aware of mask and sanitizer usage and are maintaining social distancing. Treatment of those affected is being provided by government hospitals.
Qaiser Majeed Malik, Chairman, Pakistan Science Foundation
Turkey
Despite strong faith in fatalism in Turkish society, trust and confidence in sciences have unexpectedly increased since the outbreak of COVID-19. Discussion programs on TV give their prime times to scientists more than governmental authorities. The Ministry of Health got more credit than any other political actors because of its daily updates on prevention arrangements. However, social media is more useful to share information about people's corona experiences in their living environments. Personal impressions and experiences are widely circulated during the outbreak, including health conditions and daily life routines under the "stay at home" conditions. Scientific content about COVID-19 is also heavily distributed, and governmental practices are called into question by social media users frequently. Individuals become more "science citizens" both by demanding scientific information from diverse and trustworthy sources and also by producing their own content.
Çiler Dursun, Professor, Faculty of Communication, Ankara University, Scientific Coordinator, Genovate
Malaysia
A lesson I learned during the pandemic as a science communicator: it takes a crisis for the public to heed science and see it as a solution provider. Followers on my Facebook page increased by more than 2,000; subscription to my newspaper, The Petri Dish, increased among the public; and more media interviews. How can we sustain this appetite for science? Highlight the WHY more than the HOW and WHAT.
Mahaletchumy Arujanan, Executive Director, Malaysian Biotechnology Information Centre (MABIC)
Germany
The brief guide on Proper Criticism by psychology professor Ray Hyman has been crucial for effective science communication, where he explains essential points, such as not going beyond your level of competence and using the principle of charity. Beyond presenting the facts and the science, which are often later forgotten by the audience, people remember the messenger. We have learned that coming across as compassionate, credible and trustworthy gives the message a far more significant and lasting impact.
Amardeo Sarma, Chair, Gesellschaft zur wissenschaftlichen Untersuchung von Parawissenschaften (Society for the Scientific Investigation of Parasciences)
Netherlands
In the early phase of the pandemic in the Netherlands, the government opted for a moderately strict lockdown and suggested that in this way the virus that was still present would lead to herd immunity. There was massive outrage because the public understood that civilians were being sacrificed for the creation of this herd immunity. When the government subsequently explained that the creation of herd immunity was not the goal of its policy but a welcome side effect, the unrest subsided.
Cees Renckens, Chair, Vereniging tegen de Kwaksalverij (Dutch Society Against Quackery)
Rwanda
At the University of Global Health Equity (UGHE), we have worked to further our educational mission during this unprecedented challenge of COVID-19, a pandemic that reminds us of the critical importance of our mission. With our campus located in the rural north of Rwanda, it was our priority to not only continue to provide quality education—which has transitioned to fully virtual learning—but also to take extensive precautions to protect our students, staff, faculty, and the surrounding community from the virus. Given the toll of this virus and the drastic change in social norms it has created, we are conducting not only weekly physical screenings but also mental health screenings. We are grateful to report that all from our UGHE community have remained in strong health. We are grateful to keep contributing to the fight for global health equity during a time such as this.
Agnes Binagwaho, Vice Chancellor, University of Global Health Equity; former Minister of Health
U.S.A.
The pandemic has revealed that now more than ever, science communication cannot prevail until nations and states dismantle the underlying structural injustices that erode trust in science. For instance, the exploitation of racial minorities' justified distrust of the medical establishment by anti-vaccine groups has become a matter of growing concern—from the 2017 Minnesota measles outbreak after activists convinced Somali-American immigrants that vaccines cause autism to the growing present-day opposition to a COVID-19 vaccine. Still, there is hope if only those who disseminate science-based information understand that the anti-vaccine movement, and similar movements that sit at the crossroads of science and society, have never been fundamentally about evidence. It's about whom to trust.
Kavin Senapathy, Science, health, and parenting writer; Member, American Society of Journalists and Authors; Contributing Editor, SciMoms.com
Indonesia
Although the clerics all agreed that public prayer should be banned to slow the spread of the disease, many Indonesian Muslims clogged the mosque during Ramadan and Eid, completely ignoring the health and religious authorities. Some Indonesian Muslims even strongly believe that somehow the Jewish and the Chinese are the masterminds of the pandemic—a bizarre claim that Muhammadiyah, one of the largest Muslim organizations, is trying hard to debunk. Conspiracy-theory believers are still not completely convinced by counter-arguments coming from religious authorities.
Rizqy Amelia Zein, Assistant Professor, Department of Personality and Social Psychology, Universitas Airlangga
U.S.A.
I practice Stoic philosophy and have been wondering what the Stoics might have to say about how to react to a pandemic. It struck me that our current situation is somewhat analogous to something many in the ancient world had to experience: exile. When someone is in exile, their life is very different, of lower quality, and far more constrained, than what they are used to. Just like during self-isolation or lockdown in a pandemic.
So what did the Stoics do when in exile? They taught philosophy to others, like Musonius Rufus, a famous first-century teacher. And they wrote letters of consolation to their loved ones, as Seneca, also in the first century, did to his mother Helvia.
In that letter, Seneca says that Fortune comes and goes, but what remains constant, and independent of Fortune, is our character, our determination to always be the best human beings we can be. Indeed, it is in times of difficulties and setbacks that we have an opportunity to shine. As he puts it, everyone is a good pilot when the sea is calm. It's only in the midst of a storm that we see who is truly skilled. So let's think of the current storm as an opportunity to improve our proficiency at navigating life.
Massimo Pigliucci, Professor of Philosophy, City College and the Graduate Center, City University of New York
Morocco
Our communication efforts have included webinars on the environment, climate change, and inter-linkages with the pandemic, for example effects of coronavirus on biodiversity, how COVID-19 has benefitted climate, and the green economic recovery from COVID-19. Our members have also written opinion articles published in journals and media in more than ten Arab countries. These activities have attracted the attention of communities, raised awareness as the scientific material was communicated in the Arabic language, and significantly unleashed the potential of our members.
Hajar Khamlichi, President and Co-Founder, Mediterranean Youth Climate Network; Board Member, Moroccan Alliance for Climate and Sustainable Development
Iran
Iran was one of the first countries to be involved in the crisis. Widespread international sanctions have restricted the capability to control the virus. In response to the pandemic, scientific institutions, non-governmental organizations, and government agencies have facilitated the transition from this crisis by:
Akram Ghadimi, Associate Professor, Department of Popularization of Science, National Research Institute for Science Policy
Philippines
Here in the Philippines, government agencies regularly post pandemic-related visual aids through social media in order to prove a point (e.g., "The curve is flattening," "We have more or fewer cases"), except the visual aids are unintuitive, if not altogether cherry-picked: Trend lines are traced haphazardly, bar charts are not drawn to scale, and government spokespersons almost literally tell people what to believe. Instead of just mocking these visual aids, younger data scientists and statisticians have taken to social media to talk about how to interpret data and why some visual aids are badly made. These scientists use these social media posts as a starting point to help people think critically rather than accept knowledge wholesale, which fits well with how the practice of science is about questioning, critical thinking, and healthy skepticism.
Inez Ponce de Leon, Assistant Professor, Department of Communication, Ateneo de Manila University
U.S.A. / Colombia
Seven years ago, I wrote a book in Spanish called Un enemigo invisible / An Invisible Enemy. This science and adventure novel for young adults is read in several schools throughout Colombia. The plot deals with a deadly virus that gets into Miami via a howler monkey brought from Guyana in a shipment of wild monkeys for lab research. The monkey is a reservoir (whose original host is a bat) of the (fictitious) virus Canzanboria, which infects one of the young main characters. The book thus becomes a race to find out what this virus is, where it comes from, how to get a vaccine, and how to stop it—like what is happening now.
The exciting part is that, because of the pandemic, several schools are hosting videoconferences where I can talk to kids about the book and my behind-the-scenes work with real-life virus hunters—research I did in order to write the novel. These kids are hugely interested and love my explanations about the evolution of viruses, the roles they play in our life, and the fact that were it not for a virus, none of us mammals would exist.
This pandemic has opened a window for me to take the scientific process to young minds in often inaccessible places in Colombia, as well as in China (the book was translated into Mandarin). I think reaching young people is the way to achieve a well-educated and interested society that will eventually grow up to support science in a meaningful way.
Ángela Posada-Swafford, Science, environment, and exploration journalist, lecturer, moderator, and book author; Board Member, Colombian Association of Science Journalists
Ghana
Shortly after the first case was reported, various professional science societies and associations came together to form a COVID response team. The purpose was simple: to coordinate availability of scientists for media engagements. It worked well and continues to do so, making sure that people remain informed based on accurate science. It has been a lesson on coming together and communicating science collaboratively.
Thomas Tagoe, Lecturer, Physiology and Pharmacology, University of Ghana; Co-Founder, GhScientific
Nepal
In order to control the rate of proliferation of COVID-19, social distancing has been a globally accepted effective method. In order to maintain such distancing and yet continue our business as usual, information and communication technology available today is very much useful. Also, mobile technology has been easily accessible even to people living in poverty in Nepal. Therefore, we can take the widespread use of internet platforms such as Skype, Facebook, Zoom, MS Teams, Voov, WhatsApp, Kakao, Viber, WeChat, etc. for any kind of communication including for science teaching, seminars, conferences, meetings, and discussions.
Sunil Babu Shrestha, Vice-Chancellor, Nepal Academy of Science and Technology (NAST)
"During this pandemic, perhaps most confusing of all has been the unexpected ideological struggle on the fundamentals of medicine."
Sudan
When it comes to disseminating scientific information, social media can do more harm than good in a time of crisis, due to the spread of inaccurate scientific information. In Sudan, a country that is fighting the spread of COVID-19 with little to almost no resources, WhatsApp, as usual, became the main source of news about the virus for the majority of internet users. Sudanese people's phones are flooded with misinformation, including unverified home remedies (the most viral one was drinking red tea before sunrise), fake research findings that the virus cannot survive the country's climate, and conspiracy theories claiming that the virus is a lie made up by the government to close down mosques and stop people from practicing their religion freely.
All this misinformation has led to people not following recommended policies, such as non-essential travel and social distancing. In fact, it has made some people go as far as protesting in huge numbers against the government's decision to close down the borders. In areas where access to smartphones is limited, the few people who do have smartphones end up being the main source of information for the rest.
The low level of tech literacy in many developing countries, especially among elderly communities, makes people less likely to verify sources. With the continuous increase of COVID-19 cases, misinformation will pose an even more dangerous threat for many countries. Some, like Qatar and Saudi Arabia, have criminalized its spread, but implementing such strict policies isn't always possible. This is why I believe youth- and community-led initiatives in countries like Sudan can take a leading role in raising awareness about the dangers of misinformation. People here have little trust in government but are welcoming of youth work.
Lina Yassin, Programme Manager, Climate Tracker, MENA (Middle East and North Africa)
Guatemala / U.S.A.
At the Cornell Alliance for Science, we are currently highlighting how science is being used to fight COVID-19 and dispelling myths through our online platform. In Guatemala, there have been different spaces created for "science innovation" to address the challenges this pandemic brings with communication strategies that include hashtags such as #nuestrascienciarespone (our science has answers) and #cienciaGTenaccion [GT (Guatemala) science in action]. However, there is also a lot of misinformation spread through the many social media platforms used in the country. We believe we can amplify projects that bring attention to how science is pivotal in a crisis and, at the same time, dispel misinformation by circulating fact-checked pieces in Spanish for our Central American audiences.
Pablo Ivan Orozco, Policy Affairs Associate, Cornell Alliance for Science
France
During this pandemic, perhaps most confusing of all has been the unexpected ideological struggle on the fundamentals of medicine. While evidence-based medicine was demonstrating its power, a discourse combining postmodernism and medieval thinking was developing "against the method," celebrating "common sense" medicine as opposed to medicine presented as big data and big pharma.
France found itself, with its "Marseille Protocol" at the center of this tornado whose effects were felt as far as the U.S.A.–Brazil axis. At the heart of the turmoil, the French Association for Scientific Information has endeavoured to communicate daily on its public website and its internal forum the reliable sources of information enabling everyone to untangle scientific facts from unfounded rumours, to understand where the established knowledge is and where the uncertainties lie, and to remind people that medicine is not a game of poker.
Michel Naud, Director and Former President, Association Française pour l'Information Scientifique (French Association for Scientific Information)
Serbia
During the COVID-19 pandemic, the Center for the Promotion of Science was active in raising citizens' awareness of the challenges they faced. Very early on, at the end of March, the Serbian translation of the extensive database was published on the Center's portal, enabling citizens to find out what is really behind the often confusing statistics that the media conveyed to the public in a clumsy and sometimes distorted manner. In early June, a new issue of the Center's popular science magazine Elementi was released. In a special segment containing six articles accompanied by appropriate visual storytelling, eminent physicians, philosophers, data scientists, science journalists, and graphic designers addressed some important topics related to the pandemic, such as the evolution of SARS-CoV-2, data modeling, mental health of physicians and citizens, and the moral challenges with which decision-makers were faced.
Ivan Umelji, Head of the Department for Publishing and Media Production, Centar za Promociju Nauke (Center for the Promotion of Science)
Marko Krstić, Acting Director, Centar za Promociju Nauke (Center for the Promotion of Science)
U.S.A. / U.K.
At Annual Reviews, we removed access control to all of our content—everything that we have published in the past 88 years—on March 13, 2020 in response to the COVID-19 pandemic. Compared to April 2019, usage of the content in April 2020 increased more than threefold (to 3.1 million downloads worldwide). It was not just our virology and public-health related content that was read more—every field from astronomy to vision science saw a substantial uptick. Removing barriers to access reveals the breadth interest in science for the public good: in the U.S., 28 different city governments, 18 state governments, the U.S. Department of Justice, the U.S. Senate, and the U.S. House of Representatives all recorded usage, as did parliaments in scores of other countries.
Strikingly, access from less wealthy nations rose dramatically; for example, Morocco by 1,403 percent and Ecuador by 1,033 percent. This usage re-emphasizes the value of democratizing access to science across all disciplines (not just COVID-19) and parts of the world.
While the great majority appreciate their personal and public duty to reduce the chance of infection, in the face of weeks of isolation and economic hardship, many people experience angst, anger, and disbelief. Using science to help people understand the dissonances that they were experiencing, and the necessity of their sacrifice, we developed a free service called Pandemic Life as a way to relate the body of social science research to the COVID-19 pandemic. Several times a week, articles that offer insights into such matters as the benefits of social norms, how to guide children's development, dealing with isolation, and the nature of happiness are covered on social media and in a short news story, and the relevant review article is made available for a deeper dive.
This evolved into a series of online conversations called Pandemic Live, during which some of the world's foremost researchers discuss and answer questions on aspects of the pandemic. Directly connecting the public with researchers in ways that go beyond sound bites and political posturing provides a powerful way to communicate reliable science insights into health, social, and economic issues in an age of misinformation.
Richard Gallagher, President & Editor-in-Chief, Annual Reviews, Publisher, Knowable Magazine
Russia
The experience of the South Korean church spreading coronavirus has not taught us—in Russia—anything. There have been large masses of people standing in line in the Kazan Cathedral to kiss the remains of a dead saint. A number of Russian Orthodox priests have commented that you cannot catch a virus in church. The head of church public communications has stated that people should avoid massive gatherings—but religious gatherings are an exception. In the Vatican, Pope Francis was a welcome contrast, giving Easter mass behind closed doors and praying in an empty St. Peter's Square, showing by example the distancing and isolation to which we must adhere in order to save lives. Unfortunately, the Russian Orthodox church does not have such concerns for the people.
Alexander Panchin, Senior Researcher, Institute for Information Transmission Problems (Kharkevich Institute); Member, Commission on Pseudoscience and Research Fraud, Russian Academy of Sciences
U.S.A.
Vaccination has fallen dramatically in the U.S. since the World Health Organization declared a pandemic. One proposal is to use gain-framed messages. This idea builds on insights from prospect theory, which was developed by Nobel laureate Daniel Kahneman. The theory suggests that prevention and treatment behaviors are motivated better by messages with a gain than a loss frame. As applied to our current crisis, the idea is to focus on the benefits of vaccination and on doctors' offices as being safe places. Many of us know more about what our grocery store is doing to keep us safe than what our doctor is doing. Proactively addressing this can help get vaccination back on track.
Noel Brewer, Professor, Department of Health Behavior, Gillings School of Global Public Health, University of North Carolina, Chapel Hill
Ethiopia
In Ethiopia, there are difficulties with governments, stakeholders, and the biomedical community regarding how media should further COVID-19 education and prevention. On March 27, 2020, the Ethiopian Ministry of Health and Ministry of Technology Innovation announced that Ethiopia made significant progress toward development of a cure for the virus: "In collaboration with Ethiopian traditional doctors and modern science research and clinical doctors, we are exploiting our indigenous and traditional knowledge and shaping it into modern science procedures to prepare a cure for COVID-19. The medicine has potential to prevent the virus, is non-poisonous, and is promising."
Following this announcement, many maverick and dissident scientists opposed the statement and said it was premature to make an announcement before a clinical trial was started and that it distracts people's attitudes from vigilance and alertness against the pandemic and politicizes the situation. The majority of Ethiopian people agree: a poll conducted through the messaging platform Telegram found that 71% of people said it was incorrect to make such an announcement before a clinical trial.
Tenaw Terefe, Assistant Professor, Faculty of Journalism and Communication, Addis Ababa University
Italy
As fake news and conspiracy theories about the coronavirus piled up every single day during lockdown, I found myself, as many other science popularizers here in Italy did, with an urge to share—with those following us on social media—analysis, critical thinking skills, and tools to overcome the craze and better understand what was happening.
Day after day, I noticed a closer bond developing with more and more people. They were not only asking the "expert" for information or insights in clearing up some new absurd claim, but they were also looking for some kind and reassuring words from someone they now perceived as a calm and rational friend, someone who could take even the wildest fears back down to earth.
Eventually, as things started to get a little easier and those who could returned to their jobs, crazier claims lost their grip, but the bond of trust between us, pop science talkers, and our audience, not only is still there, but has grown stronger. And it looks like a lot of good and promising things can come out of this.
Massimo Polidoro, Executive Director, Comitato Italiano per il Controllo delle Affermazioni sul paranormale (Italian Committee for the Investigation of Claims on the Paranormal)
Saudi Arabia
The infodemic we're currently seeing alerted me to a crucial point: the correct, reliable, and verified scientific information and evidence is widely available to all those who seek it.
In our digital age, the root cause of ignorance cannot be limited to only knowledge scarcity. A century ago, illiteracy was prevalent in the majority of the global population, and knowledge was only available to a small group of society. All of that has changed, but ignorance still prevails. The root causes must be deeper and broader.
I reckon that this particular ignorance is rooted in the wrong understanding of the scientific methodology process (making an observation, formalizing a hypothesis, experimenting, gathering data, analyzing it, and building a theory). The overwhelming majority of conspiracy theorists' arguments are based on a misconception of one of these basic principles, whether by confusing hypothesis for a theory, or lack of familiarity with methods of constructing a solid experiment, or ways of examining data and evidence, or erroneous analysis of experiments' results outside their scientific context.
Assuming the validity of this observation, the answer to all the ongoing "scientific" controversies won't be by discussing each issue separately, but by referring back to the basics of the scientific methodology, and determining the cognitive origins of this collective fault and reforming it.
Unfortunately, schools do not pay as much attention to the methodology as it deserves, but consider it as another lesson that must be finished to complete the curriculum. This has contributed to the emergence of many strange beliefs in our society without the slightest evidence or collective scrutiny. It is our role as science communicators to bring back the central role of the scientific methodology and reeducate the public about its importance and applications in our daily lives.
Faris Bukhamsin, CEO, Scientific Saudi
U.S.A. / India
Calling out scientific misinformation explicitly is critical for effective science communication. This can be an arduous task since misinformation can be generated rapidly (and at low cost!) through internet platforms. A group of scientists from top research institutes in India (the Tata Institute for Fundamental Research, Mumbai and the Indian Institute of Science, Bangalore) have set up a website with "Hoax Busters" that contains simple infographics explicitly calling out misinformation circulating in social media. This is a critical tool for science communication in a country like India where scientific literacy remains low but technology access has increased significantly (over 500 million smartphone users), leading to an explosion in the circulation of misinformation.
Abhilash Mishra, Director, Kevin Xu Initiative on Science, Technology, and Global Development, University of Chicago
Kenya
The Kenyan Government has been consistent in providing status updates with three key messages, while keeping communication short and simple:
1. Wash hands regularly with soap and sanitize often,
2. Social distancing, and
3. Wear face masks.
One other lesson is use of spokespersons trusted by communities such as faith-based leaders and local administration (not as widely, but at least this is a positive).
Margaret Karembu, Director, International Service for the Acquisition of Agri-biotech Applications (ISAAA) AfriCenter
Chad
This pandemic has shown us that we have an intimate relationship with nature and that there is an urgent need to enhance biodiversity protection. Biodiversity is a protection against the development of pandemics, and nature is our pharmacy and provides the molecules needed for both modern and traditional knowledge. Indigenous peoples have known this for centuries, living in harmony with nature, and advocating for a paradigm shift in our relationship to the environment. My hope is that this crisis will be a wake-up call for all of us. COVID-19 has demonstrated that politicians and business leaders are lost without science, and that listening to scientists can save lives.
Hindou Oumarou Ibrahim, Coordinator, Association des Femmes Peules Autochtones du Tchad (AFPAT) (Association of Peul Women and Autochthonous Peoples of Chad)
[Editor's Note: This article was originally published on June 8th, 2020 as part of a standalone magazine called GOOD10: The Pandemic Issue. Produced as a partnership among LeapsMag, The Aspen Institute, and GOOD, the magazine is available for free online.]
Creamy milk with velvety texture. Dark with sprinkles of sea salt. Crunchy hazelnut-studded chunks. Chocolate is a treat that appeals to billions of people worldwide, no matter the age. And it’s not only the taste, but the feel of a chocolate morsel slowly melting in our mouths—the smoothness and slipperiness—that’s part of the overwhelming satisfaction. Why is it so enjoyable?
That’s what an interdisciplinary research team of chocolate lovers from the University of Leeds School of Food Science and Nutrition and School of Mechanical Engineering in the U.K. resolved to study in 2021. They wanted to know, “What is making chocolate that desirable?” says Siavash Soltanahmadi, one of the lead authors of a new study about chocolates hedonistic quality.
Besides addressing the researchers’ general curiosity, their answers might help chocolate manufacturers make the delicacy even more enjoyable and potentially healthier. After all, chocolate is a billion-dollar industry. Revenue from chocolate sales, whether milk or dark, is forecasted to grow 13 percent by 2027 in the U.K. In the U.S., chocolate and candy sales increased by 11 percent from 2020 to 2021, on track to reach $44.9 billion by 2026. Figuring out how chocolate affects the human palate could up the ante even more.
Building a 3D tongue
The team began by building a 3D tongue to analyze the physical process by which chocolate breaks down inside the mouth.
As part of the effort, reported earlier this year in the scientific journal ACS Applied Materials and Interfaces, the team studied a large variety of human tongues with the intention to build an “average” 3D model, says Soltanahmadi, a lubrication scientist. When it comes to edible substances, lubrication science looks at how food feels in the mouth and can help design foods that taste better and have more satisfying texture or health benefits.
There are variations in how people enjoy chocolate; some chew it while others “lick it” inside their mouths.
Tongue impressions from human participants studied using optical imaging helped the team build a tongue with key characteristics. “Our tongue is not a smooth muscle, it’s got some texture, it has got some roughness,” Soltanahmadi says. From those images, the team came up with a digital design of an average tongue and, using 3D printed molds, built a “mimic tongue.” They also added elastomers—such as silicone or polyurethane—to mimic the roughness, the texture and the mechanical properties of a real tongue. “Wettability" was another key component of the 3D tongue, Soltanahmadi says, referring to whether a surface mixes with water (hydrophilic) or, in the case of oil, resists it (hydrophobic).
Notably, the resulting artificial 3D-tongues looked nothing like the human version, but they were good mimics. The scientists also created “testing kits” that produced data on various physical parameters. One such parameter was viscosity, the measure of how gooey a food or liquid is — honey is more viscous compared to water, for example. Another was tribology, which defines how slippery something is — high fat yogurt is more slippery than low fat yogurt; milk can be more slippery than water. The researchers then mixed chocolate with artificial saliva and spread it on the 3D tongue to measure the tribology and the viscosity. From there they were able to study what happens inside the mouth when we eat chocolate.
The team focused on the stages of lubrication and the location of the fat in the chocolate, a process that has rarely been researched.
The artificial 3D-tongues look nothing like human tongues, but they function well enough to do the job.
Courtesy Anwesha Sarkar and University of Leeds
The oral processing of chocolate
We process food in our mouths in several stages, Soltanahmadi says. And there is variation in these stages depending on the type of food. So, the oral processing of a piece of meat would be different from, say, the processing of jelly or popcorn.
There are variations with chocolate, in particular; some people chew it while others use their tongues to explore it (within their mouths), Soltanahmadi explains. “Usually, from a consumer perspective, what we find is that if you have a luxury kind of a chocolate, then people tend to start with licking the chocolate rather than chewing it.” The researchers used a luxury brand of dark chocolate and focused on the process of licking rather than chewing.
As solid cocoa particles and fat are released, the emulsion envelops the tongue and coats the palette creating a smooth feeling of chocolate all over the mouth. That tactile sensation is part of the chocolate’s hedonistic appeal we crave.
Understanding the make-up of the chocolate was also an important step in the study. “Chocolate is a composite material. So, it has cocoa butter, which is oil, it has some particles in it, which is cocoa solid, and it has sugars," Soltanahmadi says. "Dark chocolate has less oil, for example, and less sugar in it, most of the time."
The researchers determined that the oral processing of chocolate begins as soon as it enters a person’s mouth; it starts melting upon exposure to one’s body temperature, even before the tongue starts moving, Soltanahmadi says. Then, lubrication begins. “[Saliva] mixes with the oily chocolate and it makes an emulsion." An emulsion is a fluid with a watery (or aqueous) phase and an oily phase. As chocolate breaks down in the mouth, that solid piece turns into a smooth emulsion with a fatty film. “The oil from the chocolate becomes droplets in a continuous aqueous phase,” says Soltanahmadi. In other words, as solid cocoa particles and fat are released, the emulsion envelops the tongue and coats the palette, creating a smooth feeling of chocolate all over the mouth. That tactile sensation is part of the chocolate’s hedonistic appeal we crave, says Soltanahmadi.
Finding the sweet spot
After determining how chocolate is orally processed, the research team wanted to find the exact sweet spot of the breakdown of solid cocoa particles and fat as they are released into the mouth. They determined that the epicurean pleasure comes only from the chocolate's outer layer of fat; the secondary fatty layers inside the chocolate don’t add to the sensation. It was this final discovery that helped the team determine that it might be possible to produce healthier chocolate that would contain less oil, says Soltanahmadi. And therefore, less fat.
Rongjia Tao, a physicist at Temple University in Philadelphia, thinks the Leeds study and the concept behind it is “very interesting.” Tao, himself, did a study in 2016 and found he could reduce fat in milk chocolate by 20 percent. He believes that the Leeds researchers’ discovery about the first layer of fat being more important for taste than the other layer can inform future chocolate manufacturing. “As a scientist I consider this significant and an important starting point,” he says.
Chocolate is rich in polyphenols, naturally occurring compounds also found in fruits and vegetables, such as grapes, apples and berries. Research found that plant polyphenols can protect against cancer, diabetes and osteoporosis as well as cardiovascular ad neurodegenerative diseases.
Not everyone thinks it’s a good idea, such as chef Michael Antonorsi, founder and owner of Chuao Chocolatier, one of the leading chocolate makers in the U.S. First, he says, “cacao fat is definitely a good fat.” Second, he’s not thrilled that science is trying to interfere with nature. “Every time we've tried to intervene and change nature, we get things out of balance,” says Antonorsi. “There’s a reason cacao is botanically known as food of the gods. The botanical name is the Theobroma cacao: Theobroma in ancient Greek, Theo is God and Brahma is food. So it's a food of the gods,” Antonorsi explains. He’s doubtful that a chocolate made only with a top layer of fat will produce the same epicurean satisfaction. “You're not going to achieve the same sensation because that surface fat is going to dissipate and there is no fat from behind coming to take over,” he says.
Without layers of fat, Antonorsi fears the deeply satisfying experiential part of savoring chocolate will be lost. The University of Leeds team, however, thinks that it may be possible to make chocolate healthier - when consumed in limited amounts - without sacrificing its taste. They believe the concept of less fatty but no less slick chocolate will resonate with at least some chocolate-makers and consumers, too.
Chocolate already contains some healthful compounds. Its cocoa particles have “loads of health benefits,” says Soltanahmadi. Dark chocolate usually has more cocoa than milk chocolate. Some experts recommend that dark chocolate should contain at least 70 percent cocoa in order for it to offer some health benefit. Research has shown that the cocoa in chocolate is rich in polyphenols, naturally occurring compounds also found in fruits and vegetables, such as grapes, apples and berries. Research has shown that consuming plant polyphenols can be protective against cancer, diabetes and osteoporosis as well as cardiovascular and neurodegenerative diseases.
“So keeping the healthy part of it and reducing the oily part of it, which is not healthy, but is giving you that indulgence of it … that was the final aim,” Soltanahmadi says. He adds that the team has been approached by individuals in the chocolate industry about their research. “Everyone wants to have a healthy chocolate, which at the same time tastes brilliant and gives you that self-indulging experience.”
In 1945, almost two decades after Alexander Fleming discovered penicillin, he warned that as antibiotics use grows, they may lose their efficiency. He was prescient—the first case of penicillin resistance was reported two years later. Back then, not many people paid attention to Fleming’s warning. After all, the “golden era” of the antibiotics age had just began. By the 1950s, three new antibiotics derived from soil bacteria — streptomycin, chloramphenicol, and tetracycline — could cure infectious diseases like tuberculosis, cholera, meningitis and typhoid fever, among others.
Today, these antibiotics and many of their successors developed through the 1980s are gradually losing their effectiveness. The extensive overuse and misuse of antibiotics led to the rise of drug resistance. The livestock sector buys around 80 percent of all antibiotics sold in the U.S. every year. Farmers feed cows and chickens low doses of antibiotics to prevent infections and fatten up the animals, which eventually causes resistant bacterial strains to evolve. If manure from cattle is used on fields, the soil and vegetables can get contaminated with antibiotic-resistant bacteria. Another major factor is doctors overprescribing antibiotics to humans, particularly in low-income countries. Between 2000 to 2018, the global rates of human antibiotic consumption shot up by 46 percent.
In recent years, researchers have been exploring a promising avenue: the use of synthetic biology to engineer new bacteria that may work better than antibiotics. The need continues to grow, as a Lancet study linked antibiotic resistance to over 1.27 million deaths worldwide in 2019, surpassing HIV/AIDS and malaria. The western sub-Saharan Africa region had the highest death rate (27.3 people per 100,000).
Researchers warn that if nothing changes, by 2050, antibiotic resistance could kill 10 million people annually.
To make it worse, our remedy pipelines are drying up. Out of the 18 biggest pharmaceutical companies, 15 abandoned antibiotic development by 2013. According to the AMR Action Fund, venture capital has remained indifferent towards biotech start-ups developing new antibiotics. In 2019, at least two antibiotic start-ups filed for bankruptcy. As of December 2020, there were 43 new antibiotics in clinical development. But because they are based on previously known molecules, scientists say they are inadequate for treating multidrug-resistant bacteria. Researchers warn that if nothing changes, by 2050, antibiotic resistance could kill 10 million people annually.
The rise of synthetic biology
To circumvent this dire future, scientists have been working on alternative solutions using synthetic biology tools, meaning genetically modifying good bacteria to fight the bad ones.
From the time life evolved on earth around 3.8 billion years ago, bacteria have engaged in biological warfare. They constantly strategize new methods to combat each other by synthesizing toxic proteins that kill competition.
For example, Escherichia coli produces bacteriocins or toxins to kill other strains of E.coli that attempt to colonize the same habitat. Microbes like E.coli (which are not all pathogenic) are also naturally present in the human microbiome. The human microbiome harbors up to 100 trillion symbiotic microbial cells. The majority of them are beneficial organisms residing in the gut at different compositions.
The chemicals that these “good bacteria” produce do not pose any health risks to us, but can be toxic to other bacteria, particularly to human pathogens. For the last three decades, scientists have been manipulating bacteria’s biological warfare tactics to our collective advantage.
In the late 1990s, researchers drew inspiration from electrical and computing engineering principles that involve constructing digital circuits to control devices. In certain ways, every cell in living organisms works like a tiny computer. The cell receives messages in the form of biochemical molecules that cling on to its surface. Those messages get processed within the cells through a series of complex molecular interactions.
Synthetic biologists can harness these living cells’ information processing skills and use them to construct genetic circuits that perform specific instructions—for example, secrete a toxin that kills pathogenic bacteria. “Any synthetic genetic circuit is merely a piece of information that hangs around in the bacteria’s cytoplasm,” explains José Rubén Morones-Ramírez, a professor at the Autonomous University of Nuevo León, Mexico. Then the ribosome, which synthesizes proteins in the cell, processes that new information, making the compounds scientists want bacteria to make. “The genetic circuit remains separated from the living cell’s DNA,” Morones-Ramírez explains. When the engineered bacteria replicates, the genetic circuit doesn’t become part of its genome.
Highly intelligent by bacterial standards, some multidrug resistant V. cholerae strains can also “collaborate” with other intestinal bacterial species to gain advantage and take hold of the gut.
In 2000, Boston-based researchers constructed an E.coli with a genetic switch that toggled between turning genes on and off two. Later, they built some safety checks into their bacteria. “To prevent unintentional or deleterious consequences, in 2009, we built a safety switch in the engineered bacteria’s genetic circuit that gets triggered after it gets exposed to a pathogen," says James Collins, a professor of biological engineering at MIT and faculty member at Harvard University’s Wyss Institute. “After getting rid of the pathogen, the engineered bacteria is designed to switch off and leave the patient's body.”
Overuse and misuse of antibiotics causes resistant strains to evolve
Adobe Stock
Seek and destroy
As the field of synthetic biology developed, scientists began using engineered bacteria to tackle superbugs. They first focused on Vibrio cholerae, which in the 19th and 20th century caused cholera pandemics in India, China, the Middle East, Europe, and Americas. Like many other bacteria, V. cholerae communicate with each other via quorum sensing, a process in which the microorganisms release different signaling molecules, to convey messages to its brethren. Highly intelligent by bacterial standards, some multidrug resistant V. cholerae strains can also “collaborate” with other intestinal bacterial species to gain advantage and take hold of the gut. When untreated, cholera has a mortality rate of 25 to 50 percent and outbreaks frequently occur in developing countries, especially during floods and droughts.
Sometimes, however, V. cholerae makes mistakes. In 2008, researchers at Cornell University observed that when quorum sensing V. cholerae accidentally released high concentrations of a signaling molecule called CAI-1, it had a counterproductive effect—the pathogen couldn’t colonize the gut.
So the group, led by John March, professor of biological and environmental engineering, developed a novel strategy to combat V. cholerae. They genetically engineered E.coli to eavesdrop on V. cholerae communication networks and equipped it with the ability to release the CAI-1 molecules. That interfered with V. cholerae progress. Two years later, the Cornell team showed that V. cholerae-infected mice treated with engineered E.coli had a 92 percent survival rate.
These findings inspired researchers to sic the good bacteria present in foods like yogurt and kimchi onto the drug-resistant ones.
Three years later in 2011, Singapore-based scientists engineered E.coli to detect and destroy Pseudomonas aeruginosa, an often drug-resistant pathogen that causes pneumonia, urinary tract infections, and sepsis. Once the genetically engineered E.coli found its target through its quorum sensing molecules, it then released a peptide, that could eradicate 99 percent of P. aeruginosa cells in a test-tube experiment. The team outlined their work in a Molecular Systems Biology study.
“At the time, we knew that we were entering new, uncharted territory,” says lead author Matthew Chang, an associate professor and synthetic biologist at the National University of Singapore and lead author of the study. “To date, we are still in the process of trying to understand how long these microbes stay in our bodies and how they might continue to evolve.”
More teams followed the same path. In a 2013 study, MIT researchers also genetically engineered E.coli to detect P. aeruginosa via the pathogen’s quorum-sensing molecules. It then destroyed the pathogen by secreting a lab-made toxin.
Probiotics that fight
A year later in 2014, a Nature study found that the abundance of Ruminococcus obeum, a probiotic bacteria naturally occurring in the human microbiome, interrupts and reduces V.cholerae’s colonization— by detecting the pathogen’s quorum sensing molecules. The natural accumulation of R. obeum in Bangladeshi adults helped them recover from cholera despite living in an area with frequent outbreaks.
The findings from 2008 to 2014 inspired Collins and his team to delve into how good bacteria present in foods like yogurt and kimchi can attack drug-resistant bacteria. In 2018, Collins and his team developed the engineered probiotic strategy. They tweaked a bacteria commonly found in yogurt called Lactococcus lactis to treat cholera.
Engineered bacteria can be trained to target pathogens when they are at their most vulnerable metabolic stage in the human gut. --José Rubén Morones-Ramírez.
More scientists followed with more experiments. So far, researchers have engineered various probiotic organisms to fight pathogenic bacteria like Staphylococcus aureus (leading cause of skin, tissue, bone, joint and blood infections) and Clostridium perfringens (which causes watery diarrhea) in test-tube and animal experiments. In 2020, Russian scientists engineered a probiotic called Pichia pastoris to produce an enzyme called lysostaphin that eradicated S. aureus in vitro. Another 2020 study from China used an engineered probiotic bacteria Lactobacilli casei as a vaccine to prevent C. perfringens infection in rabbits.
In a study last year, Ramírez’s group at the Autonomous University of Nuevo León, engineered E. coli to detect quorum-sensing molecules from Methicillin-resistant Staphylococcus aureus or MRSA, a notorious superbug. The E. coli then releases a bacteriocin that kills MRSA. “An antibiotic is just a molecule that is not intelligent,” says Ramírez. “On the other hand, engineered bacteria can be trained to target pathogens when they are at their most vulnerable metabolic stage in the human gut.”
Collins and Timothy Lu, an associate professor of biological engineering at MIT, found that engineered E. coli can help treat other conditions—such as phenylketonuria, a rare metabolic disorder, that causes the build-up of an amino acid phenylalanine. Their start-up Synlogic aims to commercialize the technology, and has completed a phase 2 clinical trial.
Circumventing the challenges
The bacteria-engineering technique is not without pitfalls. One major challenge is that beneficial gut bacteria produce their own quorum-sensing molecules that can be similar to those that pathogens secrete. If an engineered bacteria’s biosensor is not specific enough, it will be ineffective.
Another concern is whether engineered bacteria might mutate after entering the gut. “As with any technology, there are risks where bad actors could have the capability to engineer a microbe to act quite nastily,” says Collins of MIT. But Collins and Ramírez both insist that the chances of the engineered bacteria mutating on its own are virtually non-existent. “It is extremely unlikely for the engineered bacteria to mutate,” Ramírez says. “Coaxing a living cell to do anything on command is immensely challenging. Usually, the greater risk is that the engineered bacteria entirely lose its functionality.”
However, the biggest challenge is bringing the curative bacteria to consumers. Pharmaceutical companies aren’t interested in antibiotics or their alternatives because it’s less profitable than developing new medicines for non-infectious diseases. Unlike the more chronic conditions like diabetes or cancer that require long-term medications, infectious diseases are usually treated much quicker. Running clinical trials are expensive and antibiotic-alternatives aren’t lucrative enough.
“Unfortunately, new medications for antibiotic resistant infections have been pushed to the bottom of the field,” says Lu of MIT. “It's not because the technology does not work. This is more of a market issue. Because clinical trials cost hundreds of millions of dollars, the only solution is that governments will need to fund them.” Lu stresses that societies must lobby to change how the modern healthcare industry works. “The whole world needs better treatments for antibiotic resistance.”