Epidemiological characteristics of a local cluster epidemic caused by the BA.2 evolutionary branch of Omicron variant.
10.3760/cma.j.cn112150-20230828-00131
- Author:
Zhao Kai HE
1
;
Zhe WANG
1
;
Qing Jun KAO
1
;
Shi CHENG
2
;
Shuang FENG
1
;
Ting Ting ZHAO
3
;
Yan Yang TAO
1
;
Xin Fen YU
2
;
Zhou SUN
1
Author Information
1. Institute of Infectious Disease Control and Prevention, Hangzhou Center for Disease Control and Prevention, Hangzhou 310021, China.
2. Microbiological Laboratory, Hangzhou Center for Disease Control and Prevention, Hangzhou 310021, China.
3. Institute of Health Relative Factors Monitoring, Hangzhou Center for Disease Control and Prevention, Hangzhou 310021, China.
- Publication Type:Journal Article
- MeSH:
Female;
Male;
Humans;
Young Adult;
Adult;
Middle Aged;
Epidemics;
Ambulatory Care Facilities;
COVID-19;
Farmers;
Fever
- From:
Chinese Journal of Preventive Medicine
2024;58(1):65-70
- CountryChina
- Language:Chinese
-
Abstract:
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.
