In 2022, the Shanghai epidemic began on February 28th. The first case was a 56-year-old female retiree, who was quarantined for two months until June 19, 2009, when the social case was completely cleared.
In 2022, Shanghai is a medium-risk area, and the main cases are distributed in Putuo District, Songjiang District, Pudong New Area and Minhang District. There are over 50,000 confirmed cases in COVID-19.