ObjectiveTo investigate the epidemiological characteristics of aggregative vomiting and diarrhea outbreak in Shanghai.
MethodsThe investigation report of the epidemic situation of aggregated vomiting and diarrhea found and reported in Shanghai from January to December 2017 were collected and summarized.Statistical analysis were made of the three epidemic distribution characteristics, clinical characteristics, main causes of infection and pathogenic bacteria, etc.
ResultsThe epidemic peak of vomiting and diarrhea outbreak in Shanghai was in winter and spring, while 79.23% of the outbreaks occurred from November to March next year.The epidemic were mainly in the suburbs, while 30% of the epidemic situation were reported in Pudong New District and Songjiang District and 10% reported in the central districts such as Xuhui, Jingan and Huangpu Districts.And 96.92% of the epidemic were found to have occurred in schools and kindergartens.The main clinical manifestations were vomiting and diarrhea, and 91.26% of the patients had vomiting symptoms.Human-to-human contact was the main transmission route of the epidemic in Shanghai, accounting for 93.85% of all.Norovirus was the primary pathogen of the epidemic in Shanghai, accounting for 74.62%.The duration of the epidemic was positively correlated with the interval between occurrence of the first case and the time of first investigation and management.
ConclusionIn 2017, the epidemic situation of aggregated vomiting and diarrhea in Shanghai mainly occurred in winter and spring and in collective units.Norovirus proved to be the main pathogen.It is imperative to strengthen the surveillance and protection of key areas and personnel.
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