Investigation on the acute gastroenteritis outbreak caused by sapovirus infection in Yangzhou City
10.3969/j.issn.1006-2483.2020.04.029
- VernacularTitle:扬州市札如病毒感染所致急性胃肠炎聚集性疫情调查
- Author:
Yuying DONG
1
;
Chun XU
1
;
Yao HUANG
1
;
Jing YAO
2
;
Jun ZHANG
1
Author Information
1. Yangzhou Center for Disease Control and Prevention, Yangzhou, Jiangsu 225001, China
2. Gungling District Center for Disease Control and Prevention, Yangzhou, Jiangsu 225001, China
- Publication Type:Journal Article
- Keywords:
Sapovirus;
Acute gastroenteritis;
Clinical symptoms;
Duration of detoxification;
Recessive infection;
Risk factors
- From:
Journal of Public Health and Preventive Medicine
2020;31(4):119-121
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the characteristics of outbreaks of acute gastroenteritis caused by sapovirus infection among primary school students in Yangzhou. Methods An on-site epidemiological investigation was carried out to analyze the clinical symptoms and risk factors of epidemic transmission. Samples of patients were collected for nucleic acid detection of sapovirus. Follow-up observations were carried out on cases with positive detection to explore the duration of intestinal detoxification of sapovirus infection. Samples of close contacts without clinical symptoms were collected to analyze recessive infection status. Results A total of 30 cases were reported from two outbreaks of sapovirus infection. As a main symptom, the incidence rate of vomiting was 93.33%. The duration of intestinal detoxification of the cases was 3 to 19 days, with an average of 11.12 days. The rate of recessive infection was 26.32%. The risk factor for sapovirus infection was exposure to vomit or feces within 1 meter (OR=12.94, 95%CI 1.19-140.37), and the protective factor was washing hands before eating (OR=0.064, 95%CI 0.007-0.56). Conclusion The main symptom of sapovirus infection was vomiting, with a high rate of recessive infection and a long detoxification period. It is easy to cause an outbreak in primary schools. Exposure to vomit or feces within 1 meter could increase the risk of sapovirus infection. Washing hands before eating could reduce the risk of sapovirus infection.
