[Introduction]: on December 20, 202020, a local asymptomatic infected person was found in Nansha district, Shanghai. It was the entry personnel who isolated the staff of the hotel Pulin hotel.

Is there any change in risk level in Nansha district of Shanghai?

As of 18:00 on December 20, 2020, all parts of Nansha district in Shanghai were low-risk areas with no change in risk level. On December 20, 202020,, in the routine monitoring of the staff of the inbound isolation hotel in Nansha district, Shanghai, one case of nucleic acid positive for covid-19 was found. Wu Mou, female, 31 years old, the entry staff isolated the staff of the hotel Pulin hotel. The expert group determined that it was a asymptomatic covid-19 infection. On November 28 and December 4 and 11, Wu’s three nucleic acid tests were all negative.

How are the risk levels of Shanghai new coronavirus pneumonia classified?

Low-risk areas: there are no confirmed cases or no new confirmed cases for 14 consecutive days in the county and urban areas.

Medium-risk areas: There are newly confirmed cases within 14 days, the cumulative confirmed cases are no more than 50, or the cumulative confirmed cases are more than 50, and no aggregation epidemic occurs within 14 days.

High-risk areas: there are more than 50 confirmed cases in total, and a clustering epidemic occurred within 14 days.

Epidemic prevention regulations in low-risk areas:

1. Wear masks scientifically. Disposable medical masks should be kept with you; Office and workshop personnel should ensure effective ventilation and ventilation, and the working staff should keep a safe distance of more than 1 meter.

2. Pay attention to hand hygiene.

3. Strengthen indoor ventilation.

4. Strengthen the cleaning and disinfection of key places.

5. Garbage removal.