China News Service, Shanghai, March 20 (Reporter Chen Jing) At the Shanghai New Coronary Pneumonia Epidemic Prevention and Control Press Conference held on the 20th, Wu Jinglei, director of the Shanghai Municipal Health and Health Commission, said that the screening results from key areas and non-key areas in Shanghai From the point of view, Shanghai found that the positive infections showed a point-like regional aggregation, and there was a hidden transmission chain.

This has laid a good foundation for Shanghai to block the local outbreak of the epidemic and the wider spread of the epidemic in time.

  On the 19th, Shanghai added 17 local confirmed cases of new coronary pneumonia and 492 local asymptomatic infections.

Among the 17 confirmed cases, 2 were found in the nucleic acid screening of relevant risk groups, and 6 were local asymptomatic infections reported in Shanghai before. found in the investigation.

Team 21 of Changming Village, Changxing Town, Chongming District, No. 88 Rijing Road, Pudong New Area, and No. 261 Kangnian Road, Malu Town, Jiading District, are listed as medium-risk areas.

Wu Jinglei said that on the 19th, the number of positive infections of the new coronavirus in Shanghai hit a new high, indicating that screening is timely and effective, and it is necessary. This is very important for Shanghai to detect positive infections as soon as possible and control the spread of the epidemic.

  It is reported that Shanghai carried out nucleic acid screening in key areas on the 16th to 17th, sampling more than 14 million person-times in total, and completed all the tests; on the 18th and 20th, on the basis of the previous screening of key areas, Shanghai conducted a series of Streets and towns carry out risk assessment and classification.

At the same time, Shanghai conducted nucleic acid screening in non-key areas to expand the coverage of screening as much as possible.

Shanghai adopts the method of slicing and grid-based promotion, and finds potential transmission risks through extensive screening to block the spread of the virus.

  Wu Jinglei pointed out that Shanghai's epidemic prevention and control has entered the most difficult and critical stage.

Shanghai should implement policies according to the situation and circumstances, implement various prevention and control measures earlier, faster, more strictly, and more effectively, speed up nucleic acid screening, flow investigation and regional investigation, and effectively control local clusters as soon as possible. Epidemic prevention and control and economic and social development, and strive to achieve the greatest prevention and control effect at the least cost.

  Yuan Zhengan, a member of the expert group of the Shanghai Epidemic Prevention and Control Leading Group, pointed out that since March, the local epidemic situation in Shanghai has been characterized by multi-point distribution, multi-chain parallel, and hidden transmission, which is the most severe test since the normalization of Shanghai's epidemic prevention and control.

Non-key areas do not need to be closed and managed. Some people may feel that they can move freely and move freely. After the test, they will go out of the house immediately, invite relatives and friends, have dinner together or participate in group activities, etc. Yuan Zhengan pointed out that these behaviors actually have Very high risk.

Yuan Zhengan said bluntly: "Before the nucleic acid test results come out, in order to prevent the spread of the virus, we recommend and encourage the public to practically avoid going out, gatherings, and meals unless it is necessary."

  Wu Jinglei said that relevant departments will further strengthen regional management, and try their best to use various methods to guide the majority of residents to participate in this screening, help us find potential infected people as soon as possible, and achieve social "dynamic clearing" as soon as possible.

  Wu Jinglei introduced that 121 confirmed cases of new coronary pneumonia met the discharge criteria for confirmed cases of new coronary pneumonia of the National Health and Health Commission, and were discharged on the 20th; another 68 asymptomatic infections were released from isolation and medical observation, a total of 189.

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