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于１９９１年对传染病科住院病人采取住院期间随时查及出院后进行回顾性调查方法，对３２３例病人的医院内感染进行了调查。结果：医院内感染率为２７．５５％；感染部位主要是呼吸道占感染总数的８０％；病毒性肝炎病人的医院内感染占感染总数的９６．６３％。依据上述结果对易感因素进行了分析。
In 1991, inpatients of Infectious Diseases were investigated retrospectively after hospitalization during hospitalization. 323 cases of nosocomial infections were investigated. Results: The infection rate in the hospital was 27.55%. The main infection area was respiratory tract accounting for 80% of the total number of infections. The nosocomial infection rate of viral hepatitis patients accounted for 96.63% of the total number of infections. Based on the above results, the predisposing factors were analyzed.