China News Service, December 3 According to the official Weibo news of the Shanghai Municipal Government Information Office, on December 3, the Office of the Shanghai Leading Group for the Prevention and Control of the New Coronary Pneumonia Epidemic issued a message: On December 2, 2021, Shanghai reported 2 cases The local confirmed case of new coronary pneumonia is a mother-daughter relationship.
After gene sequencing in the laboratory of the Municipal Center for Disease Control and Prevention, the result was a Delta variant of the new coronavirus.
After a comprehensive epidemiological investigation by experts and a search and comparison analysis of the virus gene database, it is believed that the source of the infection of the two local confirmed cases: the possibility of infection caused by exposure to the environment contaminated by imported viruses abroad cannot be ruled out.