Three new cases of positive infection in Harbin were investigated and 1196 people were identified.

　　Cctv news(Reporter Li Wenxue): The reporter learned from the special press conference on epidemic prevention and control in Harbin held at 19: 00 on September 21 that from 0: 00 to 17: 00 on September 21, there were 3 new cases of Covid-19-positive infection in Harbin, including 1 case confirmed in COVID-19, 1 case asymptomatic infection in Covid-19 and 1 case positive in the initial screening, all of which were found in Xiangfang District for centralized isolation.

　　Yang Chao, deputy director of the Municipal Health and Health Commission, said that since the discovery of positive infected people on the 20th, the municipal and district headquarters immediately entered an emergency state and quickly handled various epidemic situations. At the first time, the regional nucleic acid detection was decisively carried out, and the total number of dense and sub-dense contacts was 2319, including 1196 dense contacts and 1123 sub-dense contacts. The investigation found 4852 people at risk, and all of them have taken corresponding control measures according to the ninth edition of prevention and control requirements. From 8: 00 on September 20, one high-risk area and two medium-risk areas in Xiangfang District were urgently designated.

　　"In order to block the spread of the epidemic to the maximum extent, all public places involved in the trajectory of positive infected people have been closed and shut down for external environmental sampling and final disinfection." Yang Chao said that the investigation found five key epidemic sites and 232 sampling site sites, and all the results were negative except for three cases where samples were collected.