Fig. 2

A The boxplot of distribution of different SARS-COV-2 lineages in Chongqing Yubei from January to May 2023. B The sankey diagram of imported distribution of the origin, sampling date and types of variants from January 2022 to January 2023
A The boxplot of distribution of different SARS-COV-2 lineages in Chongqing Yubei from January to May 2023. B The sankey diagram of imported distribution of the origin, sampling date and types of variants from January 2022 to January 2023