Abstract：Objective To ascertain the pathogenic factors of infection, route of transmission and risk factors related to a cluster of acute gastroenteritis cases in a university in Hubei Province in 2017. Methods The cases were searched and surveyed according to case definitions. A retrospective cohort study and a case-control study were performed to explore the risk factors. A field investigation was conducted to survey the water supply system. Specimens were collected for the detection of norovirus nucleic acid. Results A total of 80 cases were searched from May 1 to 12, 2017. 91.3% (73/80) cases came from S school of the university, with the attack rate being 4.5% (73/1,612). From May 1 to 8, the incidence rates of students and staff with and without a visit to experiment building in S school were 5.4% (73/1,354) and 0% (0/258) respectively, with a statistically significant difference (χ2=14.570, P=0.000). The incidence risk of staff and students who had eaten fruit washed by the water of experiment building was 7.1 (95%CI:2.74-18.42) times that of the non-exposure group. 10 specimens from the cases, 1 sample form secondary water supply tank of the top floor, 3 samples from laboratory peripheral water and 2 samples from laboratory taps were GⅡ.17 norovirus positive. Conclusions This acute gastroenteritis outbreak is caused by secondary water supply polluted by GⅡ.17 norovirus. It is necessary to intensify the hygiene supervision on secondary water supply in the university.
吴杨, 刘力, 刘漫, 官旭华, 邢学森, 李旦. 一起高校二次供水被GⅡ.17型诺如病毒污染所致的急性胃肠炎暴发调查[J]. 实用预防医学, 2018, 25(11): 1334-1337.
WU Yang, LIU Li, LIU Man, GUAN Xu-hua, XING Xue-sen, LI Dan. An outbreak of acute GⅡ.17 norovirus gastroenteritis associated with contamination of secondary water supply in a university. , 2018, 25(11): 1334-1337.
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2018, Vol. 25 
