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COVID-19: Uncovering the Secrets of the Sewers

Sewage tells the health of a city.

Sample pretreatment in the laboratory

Sample pretreatment in the laboratory

qPCR detection of virus in sewage

qPCR detection of virus in sewage

Professor Tong Zhang (second from left) introducing the sewage monitoring system to the Chief Executive Mrs Carrie Lam at HKU sewage testing laboratory

Professor Tong Zhang (second from left) introducing the sewage monitoring system to the Chief Executive Mrs Carrie Lam at HKU sewage testing laboratory

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