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Sewage testing could protect schools, hospitals from Covid-19 outbreaks

Early in the pandemic, a few cities and countries around the world began testing sewage for evidence of the coronavirus, hoping to detect rising infections early.

Now some researchers are fine-tuning that strategy by moving upstream to test waste from single hospitals or other buildings, aiming to quickly pinpoint burgeoning Covid-19 outbreaks and stop them with testing and isolation...

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