Cause analysis of epidemic situation in Hebei District of Tianjin

Caused by accidental exposure to infection during centralized isolation. The confirmed cases in Hebei have a history of staying in Jinnan control area. After a local epidemic occurred in Jinnan area on June 8, 2022 1 day, the cases were brought into isolation control on June 1 day until the final exposure reached 14, that is, the isolation was lifted on June 1 day 15. At 65438+1October 27th 10, the whole genome sequence of Hebei virus was carried out by the Municipal Center for Disease Control and Prevention, and it was confirmed by the China Center for Disease Control and Prevention that it belonged to Omicron mutant strain, which was consistent with the virus sequence of local epidemic cases in Jinnan District. According to the preliminary judgment, the local epidemic situation in Hebei is related to the local epidemic situation in Jinnan, which is caused by accidental exposure to infection during centralized isolation.