Original title: Shanghai announced the traceability of the recent confirmed cases of local diagnosis results. Oriental Network reported on March 11: Today at 15:20, Shanghai released an official WeChat newspaper, "Learning survey, gene sequencing comparison, and comprehensive research and judgment analysis of the expert group: Recently, there are clear epidemiological associations in Songjiang, Jiading, Minhang, Huangpu, Xuhui, Baoshan, Pudong New District.The source, the source of infection focuses on: the virus pollution environment carried by overseas input cases is caused by local infections and spread due to the omissions of management. "