Analysis of an outbreak of norovirus infection at a university in Guang-dong in 2020
Objective To analyze the outbreak of norovirus infection in a university in Guangdong Province to pro-vide a reference for improving the weak links in the prevention and control of norovirus in universities.Methods Fresh stool samples were collected from all patients and routine stool examination was performed in the outpatient department.In addition,the samples of feces and vomit,water,and food from all cases were sent to the Zhanjiang Centre for Disease Control and Prevention for virological testing.Results A total of 174 cases of norovirus infection were confirmed in this study,and the overall incidence rate was 4.09‰.The prevalence rate of students was 4.35‰(171 cases),including 4.11‰(106 cases)for boys and 4.60‰(65 cases)for girls,and there was no significant difference in the incidence rate of norovirus between boys and girls(x2=0.478 9,P=0.489).The prevalence rate of faculty and staff was 0.79‰(2 cases).and there was a signifi-cant difference in the prevalence of norovirus between faculty and students(x2=7.090 6,P=0.008).Most patients had a course of 2-4 days and had mild symptoms without obvious symptoms of dehydration.Conclusion Norovirus is the main pathogen of the cluster gastroenteritis outbreak at Guangdong Ocean University,and dormitories,classrooms,and catering places are the key prevention sites for norovirus.
UniversityClinicOutbreakNorovirus infectionInfectious disease control
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