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目的对不明原因腹泻医院感染进行流行病学调查,分析其原因和特点,为预防与控制医院感染提供依据。方法采用流行病学调查表,进行查阅病历和感染现场调查,描述其传播过程和不同接触方式与感染发病的关系。结果诺如病毒感染患者9例,与其接触共52例,罹患率17.31%,发病潜伏期和病程符合该病特点。结论医院感染首例传染源为输入性;无防护近距离密切接触为主要传播方式;住院患者和陪床家属是高危人群。
Objective To investigate epidemiological investigation of nosocomial diarrhea in unidentified causes of diarrhea and analyze its causes and characteristics so as to provide basis for prevention and control of nosocomial infections. Methods The epidemiological questionnaire was used to investigate the history of medical records and infection and to describe the relationship between the transmission process and different exposure patterns and the incidence of infection. Results Norovirus infection in 9 patients, in contact with a total of 52 cases, the attack rate of 17.31%, the incubation period and duration of the disease in line with the characteristics. Conclusion The first source of nosocomial infection was imported. Non-guarded close contact was the main mode of transmission. Hospitalized patients and relatives were high risk groups.