What You Flush Is Helping Track The Coronavirus - a podcast by NPR

More than 100 cities are monitoring sewage for the presence of the coronavirus, and public health officials think wastewater could provide an early warning system to help detect future spikes. NPR science correspondent Lauren Sommer explains how it works, and why scientists who specialize in wastewater-based epidemiology think it could be used to monitor community health in other ways.

Email the show at shortwave@npr.org.

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