Epidemiological characteristics of a local cluster epidemic caused by the BA.2 evolutionary branch of Omicron variant
J Descriptive epidemiological methods were used to analyze the epidemiological characteristics of the local cluster of COVID-19 in the logistic park of Yuhang District in Hangzhou in March 2022.The cluster epidemic was detected by a case who actively visited the fever clinic.The epidemic lasted for 8 days,and a total of 58 cases(53 workers,2 students,1 farmer,1 teacher and 1 unemployed)were found,including 40 males and 18 females.The age was(33.29±12.22)years.There cases were mainly in Yuhang District(48 cases,82.77％)and Shangcheng District(7 cases,12.07％)of Hangzhou.The real-time regeneration number peaked at 2.31 on March 10th and decreased to 0.37 on March 15th.The sequencing result of the indicated case was 100％homologous with the sequence uploaded from South Korea on March 4th,2022.
Severe acute respiratory syndrome coronavirus 2Cluster epidemicOmicron variantEpidemiological characteristics
万方数据
维普
