"The "New Coronavirus Pneumonia Prevention and Control Plan (Ninth Edition)" clearly states that once a local epidemic occurs, the counties (cities, districts, and banners) where asymptomatic infections should be accurately divided into three types of risk areas: high-risk zones, medium-risk zones, and low-risk zones, coordinate all forces, implement classified management measures, timely and dynamically update the risk levels and control measures according to the epidemic situation, and actively release them to the public." On September 4, Dr. Liu Guoxia of the Education Department of the Municipal Center for Disease Control and Prevention introduced in detail the lifting standards for high-risk zones.
Liu Guoxia said that the ninth edition of the prevention and control plan pointed out that the standard for high-risk areas is that there are no new infections for 7 consecutive days, and all personnel in the risk area completed a round of nucleic acid screening on the seventh day were negative, which was reduced to a medium-risk area; there are no new infections for 3 consecutive days and reduced to a low-risk area. The standard for removing the medium-risk area of
is that there are no new infections for 7 consecutive days, and all personnel in the risk area completed a round of nucleic acid screening on the seventh day were negative, which was reduced to a low-risk area.
low-risk area removal standard is that the county (city, district, banner) where there are no medium-risk areas, and the low-risk areas are adjusted to normalized prevention and control.
"If new infections appear during the control period, the control time will be recalculated based on the risk analysis results." Liu Guoxia said that the demarcation of the risk zone specifically considers a variety of factors, including the living conditions of cases and asymptomatic infected people, their living environment, natural barriers around their residence (highways, rivers, mountains and rivers, etc.); population protection in relevant areas, crowd gatherings, frequent contact between cases and asymptomatic infected people and other personnel; the time and scope of work and activities of cases and asymptomatic infected people, as well as the airtightness and ventilation of relevant places; the length of time when the investigation starts after the epidemic is discovered, etc.
Editor: Li Jiaming Review: Dai Baozhu Producer: Wang Pengcheng
