Workers at an industrial textile factory.
"Dust thou art, and unto dust shalt thou return." Whoever wrote that famous line probably didn't realize that dust actually contains a secret weapon.
"We have developed the capability to turn dust into data that can be used to trace problems in the supply chain."
Far from being a collection of mere inanimate particles, dust is now recognized as a powerful tool filled with living sensors. Studying those sensors can reveal an object's location history, which can help brands fight unethical manufacturing.
"We have developed the capability to turn dust into data that can be used to trace problems in the supply chain," explains Jessica Green, the CEO of Phylagen, a San-Francisco-based company that she co-founded in 2014.
So how does the technology work?
Dust gathers everywhere—on our bodies, on objects—and that dust contains microbes like bacteria and viruses. Just as we humans have our own unique microbiomes, research has shown that physical locations have their own identifiable patterns of microbes as well. Visiting a place means you may pick up its microbial fingerprint in the dust that settles on you. The DNA of those microbes can later be sequenced in a lab and matched back to the place of origin.
"Your environment is constantly imprinted on you and vice versa," says Justin Gallivan, the director of the Biotechnology Office at DARPA, the research and defense arm of the Pentagon, which is funding Phylagen. "If we have a microbial map of the world," he posits, "can we infer an object's transit history?"
So far, Phylagen has shown that it's possible to identify where a ship came from based on the unique microbial populations it picked up at different naval ports. In another experiment, the sampling technology allowed researchers to determine where a person had walked within 1 kilometer in San Francisco, because of the microbes picked up by their shoes.
One application of this technology is to help companies that make products abroad. Such companies are very interested in determining exactly where their products are coming from, especially if foreign subcontractors are involved.
"In retail and apparel, often the facilities performing the subcontracting are not up to the same code that the brands require their suppliers to be, so there could be poor working conditions," says Roxana Hickey, a data scientist at Phylagen. "A supplier might use a subcontractor to save on the bottom line, but unethical practices are very damaging to the brand."
Before this technology was developed, brands sometimes faced a challenge figuring out what was going on in their supply chain. But now a product can be tested upon arrival in the States; its microbial signature can theoretically be analyzed and matched against a reference database to help determine if its DNA pattern matches that of the place where the product was purported to have been made.
Phylagen declined to elaborate further about how their process works, such as how they are building a database of reference samples, and how consistent a microbial population remains across a given location.
As the technology grows more robust, though, one could imagine numerous other applications, like in police work and forensics. But today, Phylagen is solely focused on helping commercial entities bring greater transparency to their operations so they can root out unauthorized subcontracting.
Then those unethical suppliers can – shall we say – bite the dust.
Thanks to safety cautions from the COVID-19 pandemic, a strain of influenza has been completely eliminated.
The flu shot, explained
Influenza viruses type A and B are responsible for the majority of human illnesses and the flu season.
Centers for Disease Control
For more than a decade, flu shots have protected against two types of the influenza virus–type A and type B. While there are four different strains of influenza in existence (A, B, C, and D), only strains A, B, and C are capable of infecting humans, and only A and B cause pandemics. In other words, if you catch the flu during flu season, you’re most likely sick with flu type A or B.
Flu vaccines contain inactivated—or dead—influenza virus. These inactivated viruses can’t cause sickness in humans, but when administered as part of a vaccine, they teach a person’s immune system to recognize and kill those viruses when they’re encountered in the wild.
Each spring, a panel of experts gives a recommendation to the US Food and Drug Administration on which strains of each flu type to include in that year’s flu vaccine, depending on what surveillance data says is circulating and what they believe is likely to cause the most illness during the upcoming flu season. For the past decade, Americans have had access to vaccines that provide protection against two strains of influenza A and two lineages of influenza B, known as the Victoria lineage and the Yamagata lineage. But this year, the seasonal flu shot won’t include the Yamagata strain, because the Yamagata strain is no longer circulating among humans.
How Yamagata Disappeared
Flu surveillance data from the Global Initiative on Sharing All Influenza Data (GISAID) shows that the Yamagata lineage of flu type B has not been sequenced since April 2020.
Nature
Experts believe that the Yamagata lineage had already been in decline before the pandemic hit, likely because the strain was naturally less capable of infecting large numbers of people compared to the other strains. When the COVID-19 pandemic hit, the resulting safety precautions such as social distancing, isolating, hand-washing, and masking were enough to drive the virus into extinction completely.
Because the strain hasn’t been circulating since 2020, the FDA elected to remove the Yamagata strain from the seasonal flu vaccine. This will mark the first time since 2012 that the annual flu shot will be trivalent (three-component) rather than quadrivalent (four-component).
Should I still get the flu shot?
The flu shot will protect against fewer strains this year—but that doesn’t mean we should skip it. Influenza places a substantial health burden on the United States every year, responsible for hundreds of thousands of hospitalizations and tens of thousands of deaths. The flu shot has been shown to prevent millions of illnesses each year (more than six million during the 2022-2023 season). And while it’s still possible to catch the flu after getting the flu shot, studies show that people are far less likely to be hospitalized or die when they’re vaccinated.
Another unexpected benefit of dropping the Yamagata strain from the seasonal vaccine? This will possibly make production of the flu vaccine faster, and enable manufacturers to make more vaccines, helping countries who have a flu vaccine shortage and potentially saving millions more lives.
Founder Lewis Hornby and his grandmother Pat, sampling Jelly Drops—an edible gummy containing water and life-saving electrolytes.
When Lewis Hornby visited his grandmother at her nursing home afterward, he learned that dehydration especially affects people with dementia, as they often don’t feel thirst cues at all, or may not recognize how to use cups correctly. But while dementia patients often don’t remember to drink water, it seemed to Hornby that they had less problem remembering to eat, particularly candy.
Where people with dementia often forget to drink water, they're more likely to pick up a colorful snack, Hornby found. alzheimers.org.uk
Hornby wanted to create a solution for elderly people who struggled keeping their fluid intake up. He spent the next eighteen months researching and designing a solution and securing funding for his project. In 2019, Hornby won a sizable grant from the Alzheimer’s Society, a UK-based care and research charity for people with dementia and their caregivers. Together, through the charity’s Accelerator Program, they created a bite-sized, sugar-free, edible jelly drop that looked and tasted like candy. The candy, called Jelly Drops, contained 95% water and electrolytes—important minerals that are often lost during dehydration. The final product launched in 2020—and was an immediate success. The drops were able to provide extra hydration to the elderly, as well as help keep dementia patients safe, since dehydration commonly leads to confusion, hospitalization, and sometimes even death.
Not only did Jelly Drops quickly become a favorite snack among dementia patients in the UK, but they were able to provide an additional boost of hydration to hospital workers during the pandemic. In NHS coronavirus hospital wards, patients infected with the virus were regularly given Jelly Drops to keep their fluid levels normal—and staff members snacked on them as well, since long shifts and personal protective equipment (PPE) they were required to wear often left them feeling parched.
In April 2022, Jelly Drops launched in the United States. The company continues to donate 1% of its profits to help fund Alzheimer’s research.