The two epidemics in Shanghai were from the end of February to May in 2022 and165438+1October in 2022. The first epidemic in Shanghai began on February 28th. On the afternoon of March 28th, 2022, Shanghai held a press conference on epidemic prevention and control. At the meeting, a new case 1 case in Japan was reported on March 28th, indicating that the case was a 56-year-old female retiree who went to tongji hospital fever clinic on the afternoon of March 28th, and the result of COVID-19 nucleic acid test was positive. On March 1 day, COVID-19 was found to be positive for nucleic acid detection by Shanghai CDC. At that time, West Du Ming Garden, No.55 Zhidan Road/KLOC-0, Putuo District, where the infected people lived, was controlled, and Shiquan Community Cultural Center, No.33 Ningqiang Road, Shiquan Street, Putuo District, was classified as a medium-risk area, and the risk level of other areas in Shanghai remained unchanged.