On February 24, 2022, the Hebei Provincial Center for Disease Control and Prevention completed the virus whole genome sequencing of the throat swab specimen of Wang Moumou, an asymptomatic infected person in Xinhua District, Shijiazhuang City. The virus sequences of the cases are highly homologous and completely share the same mutation, deletion and insertion sites, and belong to the Omicron variant. From 22:00 on February 21 to 12:00 on February 22, Wuhan City reported a number of confirmed cases of new coronary pneumonia, all of which were students and their families in a company’s training class. Wang Moumou had been in contact with Liu Moumou (diagnosed on February 23, 2022), a trainee of the training course, without protective measures for a long time in Wuhan. Combined with Wang Moumou’s new coronavirus whole genome sequencing results and epidemiological history, it was determined that Shijiazhuang was The case in Xinhua District of the city is in the same transmission chain as the epidemic in the training class in Wuhan, and the source of infection is the students of the training class in Wuhan, which belongs to the cluster of new coronary pneumonia.
(Headquarters reporter Guo Xiaoping Guo Yongliang)