An outbreak of acute gastroenteritis caused by Sapovirus in a community of Guangdong province
10.3760/cma.j.issn.0254-6450.2020.02.016
- VernacularTitle:一起札如病毒引起社区暴发流行病学调查分析
- Author:
Jianyi LI
1
;
Wei MAI
;
Hanqing TAN
;
Minting JIAN
;
Hong DENG
;
Zhipeng CHEN
;
Huihuan CHEN
Author Information
1. 广东省肇庆市疾病预防控制中心传染病预防控制科
- Keywords:
Sapovirus;
Community;
Outbreak;
Epidemiological investigation
- From:
Chinese Journal of Epidemiology
2020;41(2):226-230
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the epidemiological characteristics and clinic symptoms of an outbreak of infectious diarrhea caused by Sapovirus,in CT community,Zhaoqing,Guangdong province.Methods Retrospective study of field epidemiology investigation was carried out and Chi-square test was used enteroviruses were detected by RT-PCR in swab,fecal specimens and water samples.Results A total of 422 cases were identified in this outbreak,with the prevalence as 11.95％.Cases mainly concentrated between 21 and 24,December,with curves noticed by pointsource and peaked on the 22nd.Symptoms mainly appeared as vomiting,with watery stool.Patients were founded in every village,with the highest prevalence appeared in the elderly (25.20％) but involved in every age group.Sapovirus infection was most frequently seen in the population under 25 years of age,with overall prevalence as 16.41％.People older than 50 years of age took the second place (12.05％),and the lowest was seen between 25 to 49 years age group (8.42％).Sapovirus was detected in both swab and fecal specimens,with the positive rate as 38.78％.Both general and heatresistant coliformed-bacteria were detected in the 24 monitored water samples,with the qualification rates as 95.83％,45.83％ and 50.00％,respectively.However,Sapovirus was not detected in any of the water samples.Conclusions Our findings confirmed that an outbreak,caused by sapovirus infection in CT community was most likely related to the central water supply.The surveillance system for infectious diarrheal diseases should be improved and both public health awareness and surveillance programs on drinking water should be strengthened.
