 Infectious COVID-19 virus can be found in a COVID-19 patient at the end of its incubation period and after symptoms onset. The most critical work at present for COVID-19 prevention and control is to facilitate early detection, early reporting, early quarantine, and early treatment of the disease, which can help save lives.
Infectious COVID-19 virus can be found in a COVID-19 patient at the end of its incubation period and after symptoms onset. The most critical work at present for COVID-19 prevention and control is to facilitate early detection, early reporting, early quarantine, and early treatment of the disease, which can help save lives. 

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