At the press conference on the prevention and control of the new crown pneumonia epidemic in Shanghai held on May 22, regarding the question of what conditions must be met for closed and controlled areas to be adjusted to prevention areas, Zhao Dandan, deputy director of the Shanghai Municipal Health Commission, introduced, The first stage: From now to May 31, the number of new positive infections in a single day has been further reduced, and the scope of closed and controlled areas has been continuously narrowed.

If there are no new positive infected persons for 7 consecutive days, the closed control area will be adjusted to the control area, and there will be no new positive infected persons for the following 3 consecutive days.

If there are no new positive infections for 7 consecutive days, the control area will be adjusted to the prevention area; if there are positive infections, the control area will be adjusted to the closed area.

If there is no new positive infection in the prevention area, no adjustment will be made; if there is a positive infection, the scope of the medium and high risk areas of the epidemic shall be delineated according to the relevant national standards, comprehensively the number of positive infections, regional distribution, and epidemic risk.

  The second stage: The city implements the division of epidemic risk areas. If there is no closed control area or control area in the area, the area can be regarded as a low-risk area and the prevention area will be lifted.

(Reporter Kang Yuzhan)

Responsible editor: [Lu Yan]

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