Could sewage act like a COVID-19 early warning system?

In their efforts to stave off a second wave of COVID-19, scientists from around the world have turned to a new ally: sewage. Given that many people with the virus are asymptomatic and will not be tested for the disease, scientists say sewage could act like a COVID-19 early warning system.

For more information, see UNEP’s factsheet on COVID-19, wastewater and sewage

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