Sewers are a disgustingly reliable 'early warning system' for COVID-19 outbreaks


It's a dirty job, but someone's gotta do it: Researchers are reportedly turning to Number Two in order to predict where the next major coronavirus outbreak will be, The Washington Post reports. "S--- is a great source of information," explained David Hirschberg, the founder of a biotech firm that is working to track COVID-19 by studying sewage.
The novel coronavirus can be detected in wastewater as much as two weeks before a person begins to show symptoms, which means that studying a city's raw sewage can help researchers understand how much of a population is ill. More than 170 wastewater facilities around the country (which account for about 13 percent of the population) have been sending samples to labs, which are finding that based on what goes down the toilet, outbreaks are likely even worse than official numbers are showing. "Our estimates are about 10 times higher than the cumulative [confirmed] cases up to that date," said Mariana Matus, a co-founder of the sewage testing company Biobot.
Using the data gleaned from sewage could be crucial as the country slowly begins to reopen. For example, if researchers detect a spike in the amount of COVID-19 virus circulating in the bowels of a particular population, it might be time to snap closed a quarantine again; low virus counts, on the other hand, could lead to tentative openings.
Subscribe to The Week
Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.

Sign up for The Week's Free Newsletters
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
"This is the kind of early warning system you want to have," Hirschberg said. "When people start showing up at hospitals and start dying, that's not the indicator you want to have. That's too late." Read more at The Washington Post.
Sign up for Today's Best Articles in your inbox
A free daily email with the biggest news stories of the day – and the best features from TheWeek.com
Jeva Lange was the executive editor at TheWeek.com. She formerly served as The Week's deputy editor and culture critic. She is also a contributor to Screen Slate, and her writing has appeared in The New York Daily News, The Awl, Vice, and Gothamist, among other publications. Jeva lives in New York City. Follow her on Twitter.
-
May 26 editorial cartoons
Cartoons Monday's political cartoons feature Donald Trump's red tie, Hunter Biden's crypto lament, and one meaning of Memorial Day
-
3 tips for coping with financial stress
The explainer Feel more at peace in an unpredictable economy
-
Crossword: May 26, 2025
The Week's daily crossword
-
New FDA chiefs limit Covid-19 shots to elderly, sick
speed read The FDA set stricter approval standards for booster shots
-
US overdose deaths plunged 27% last year
speed read Drug overdose still 'remains the leading cause of death for Americans aged 18-44,' said the CDC
-
Trump seeks to cut drug prices via executive order
speed read The president's order tells pharmaceutical companies to lower prescription drug prices, but it will likely be thrown out by the courts
-
RFK Jr. visits Texas as 2nd child dies from measles
Speed Read An outbreak of the vaccine-preventable disease continues to grow following a decade of no recorded US measles deaths
-
Shingles vaccine cuts dementia risk, study finds
Speed Read Getting vaccinated appears to significantly reduce the chances of developing Alzheimer's and other forms of dementia
-
Measles outbreak spreads, as does RFK Jr.'s influence
Speed Read The outbreak centered in Texas has grown to at least three states and Health Secretary Robert F. Kennedy Jr. is promoting unproven treatments
-
RFK Jr. offers alternative remedies as measles spreads
Speed Read Health secretary Robert F. Kennedy Jr. makes unsupported claims about containing the spread as vaccine skepticism grows
-
Texas outbreak brings 1st US measles death since 2015
Speed read The outbreak is concentrated in a 'close-knit, undervaccinated' Mennonite community in rural Gaines County