医院内获得性感染(Hospital-acquired Infections,Nosocomial Infections)简称院内感染,系指发生在医院中的一切感染而言。即感染必须发生在医院内,包括于医院内感染出院后始发病,或转入其它医院后发病者。但应排除社会获得性(医院外)感染后在住院期间发病的患者。疾病的潜伏期是判定感染发生时间和地点的主要依据。感染的对象主要是住院病人和医院工作人员。 Hospital-acquired infections (Nosocomial Infections) refer to nosocomial infections for any infection that occurs in a hospital. That infection must occur in the hospital, including in the hospital infection after discharge from the onset, or transferred to other hospitals after onset. However, patients who become ill after hospitalization after social acquired (out-of-hospital) infection should be excluded. The incubation period of the disease is the main basis for determining when and where the infection occurs. Infected mainly inpatients and hospital staff.