How sewage could reveal the true scale of coronavirus outbreak

More than a dozen research groups worldwide have started analysing wastewater for
the new coronavirus as a way to estimate the total number of infections in
a community, given that most people will not be tested.

Routine wastewater surveillance could be used as a non-invasive early-warning tool to alert communities to new COVID-19 infections.. The institute has previously monitored sewage to detect outbreaks of norovirus, antibiotic-resistant bacteria, poliovirus and measles.

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Nice work if you can get it.