Investigation on the clustering outbreaks of acute gastroenteritis caused by Sapovirus in high schools at Weihai City
Objective This paper aims to analyze the epidemiological characteristics of the clustering epidemic caused by Sapo-virus(SaV)in Weihai City,so as to provide reference for the prevention and control of acute gastroenteritis caused by Sapovir-us.Methods The descriptive epidemiology was utilized to analyze the characteristics of the outbreak.The clinical symptoms of Sapovirus was analyzed.The suspected pathogens were detected by RT-PCR.Phylogenetic tree was constructed by PCR prod-uct sequencing and nucleotide sequence alignment.Results The two outbreaks were caused by the infection of the first case,and there were apparent differences in the mode of transmission and clinical symptoms.Phylogenetic analysis showed that the genotype of Sapovirus was GⅠ.6.Conclusion Both cases in Weihai City were acute gastroenteritis outbreaks caused by Sapo-virus GⅠ.6 infection.