医院感染系指住院患者入院后所发生的感染。既往有关医院感染的资料报道虽多,但对宿主与病原体之间关系叙述较少。本文作者在1973年对美国某城两所医院所发生的医院感染进行了4个月的流行病学调查,重点蒐集了有关病原的种类与年龄的关系,以及发病潜伏期等的资料如下: 尿路是感染最常见的部位。大肠杆菌和肺炎杆菌是尿路及其它部位最常见的病原菌,白色念珠菌、肠杆菌属和奇异变形杆菌从尿路分离的阳性率也较其它部位高。其它 Hospital infection refers to the infection that occurs after admission to hospitalized patients. In the past, there were many reports on the information about nosocomial infections, but there were few reports on the relationship between hosts and pathogens. In 1973, the author conducted a 4-month epidemiological survey of nosocomial infections in two hospitals in one city in the United States, focusing on collecting information on the relationship between the types of pathogens and their age, as well as the incubation period. The urinary tract Is the most common site of infection. Escherichia coli and Klebsiella pneumoniae are the most common pathogenic bacteria in the urinary tract and other parts. The positive rates of Candida albicans, Enterobacter and Proteus mirabilis isolated from the urinary tract are also higher than those of other parts. other