医院感染诺如病毒肠炎的流行病学调查

Norovirus in Hospital:Its Epidemiological Investigation

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 the transmission process of large scale abrupt diarrhea with unknown reason occurred in hospital, analyze the cause of infection outbreak and the characteristics of Norovirus in hospital and to provide evidence to prevent and control the infection in hospital. METHODS Standardized questionnaire was used on individual, looking over the case of illness and the investigation of outbreak scene, the relationship of various contact type and odds of infection. RESULTS Nine cases were occurred, fifty-two cases were contacted, The morbidity was 17.31%. The feature of Norovirus infection was clear. CONCLUSIONS The first source of infection was an input case. The main transmission way is no protecting close contact. The high risk group is inpatients and their relatives.