What is the cause of Changchun epidemic?

The cause of Changchun epidemic is the evolutionary branch of Omicron mutant ba.2, and the high incidence season of respiratory infectious diseases overlaps with the school season, which increases people's mobility. The epidemic first occurred in rural areas, and people tended to gather.

Cause of epidemic situation

The infected person has no obvious symptoms. The virus strain currently prevalent in Jilin Province is an evolutionary branch of Omicron mutant strain BA.2, which has stronger transmission power and faster transmission speed than Omicron original strain, but its characteristics determine that the clinical symptoms of infected people are not obvious or asymptomatic.

The emergency mechanism is not perfect. Due to the lack of understanding and inaccurate judgment of the characteristics of Omicrovirus and the severe and complicated epidemic situation in Jilin Province, the decision-making arrangements of the provincial government have not been put in place and thoroughly, and the measures of investigation, investigation, treatment and management have not been taken.

The outbreak of the epidemic in Jilin coincided with the start of school in spring, which accelerated the spread and spread of the epidemic. Cluster epidemic occurred in some schools, which made the situation of community prevention and control and campus prevention and control severe and complicated, and made prevention and control more difficult. Activities such as dinners and fairs in rural areas have also accelerated the spread of the epidemic.