miércoles, 8 de abril de 2020

How sewage could reveal true scale of coronavirus outbreak

How sewage could reveal true scale of coronavirus outbreak

A health worker administers a mouth swab test to a man in the Stjwetla informal settlement in Alexandra, South Africa



COVID-19 testing in South Africa: the country is participating in the SOLIDARITY trial. The World Health Organization says it will support other African nations to join. (Alet Pretorius/Gallo Images/Getty)



Sewage might reveal true infection rate

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