Epidemiological and genetic characteristics of sapovirus clusters in Changzhou schools from 2019 to 2022
10.16835/j.cnki.1000-9817.2023.10.030
- VernacularTitle:常州市2019—2022年学校札如病毒聚集性疫情的流行病学及病毒基因特征分析
- Author:
YAO Ping, LI Qiong, JIANG Xia, MAO Xujian, XU Jian, TU Bowen, WANG Fengming, JIANG Jingyi
1
Author Information
1. Pathogenic Biology Laboratory, Changzhou Center for Disease Control and Prevention, Changzhou (213022) , Jiangsu Province, China
- Publication Type:Journal Article
- Keywords:
Enterovirus infections;
Disease outbreaks;
Incidence;
Genes;
Viruses
- From:
Chinese Journal of School Health
2023;44(10):1574-1577
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze the epidemiological characteristics and genetic characteristics of sapovirus (SaV) in a cluster of schools in Changzhou, so as to provide a reference for the treatment of clustered vomiting and diarrhea events in schools.
Methods:The epidemiological data and laboratory test data of sapovirus clusters in Changzhou from 2019 to 2022 were collected and analyzed. Partial VP1 genes of SaV positive samples were amplified and sequenced for phylogenetic analysis.
Results:A total of 8 cases of clusters of SaV epidemics were reported in Changzhou City from 2019 to 2022, with 118 reported cases. The total attack rate was 1.47%, and the median of the attack number was 15. There were 6 outbreaks in kindergartens and 2 outbreaks in primary schools, which were reported in the epidemic period from September to December. The main clinical manifestations were vomiting (113 cases, 95.76 %), abdominal pain (39 cases, 33.05%), and diarrhea (16 cases, 13.56%). Among the 8 outbreaks, 17 sample strains were successfully sequenced. 5 outbreaks were GII.3 , and the other 3 outbreaks were GI.1, GI .3 and GII.2. GI and GII were the main genotypes in this area, and GII .3 was the predominant strain.
Conclusion:SaV is an important pathogen in the clusters of vomiting and diarrhea in schools after the transmission of norovirus. Continuous surveillance of SaV should be carried out to further understand its epidemiological characteristics and genotype distribution, so as to provide scientific basis for the prevention and control of the epidemic in schools.
