According to the whole genome sequencing analysis of the virus, the virus strain in Jilin Province is the evolutionary branch of the Omicron variant strain BA.2.

Combined with the analysis of the genome sequencing and the epidemiological investigation of the previously reported infected persons, it is preliminarily judged that the epidemic was imported into Jilin Province in late February and spread locally.

  (Headquarters reporter Zhang Xucheng, Liu Yuexin, Xiao Jinwei)