兹将我院1962年3月～1964年7月收治的大肠杆菌性肺炎5例报告如下。5例均为痰液培养有纯粹大肠杆菌生长,在取痰标本前清洁口腔,而口腔液培养无大肠杆菌生长者。5例中男性2例,女性3例,年龄为25～62岁。感染途径:本组中2例的肺炎系继发于大肠杆菌败血症,细菌经血行侵入肺部;1例继发于大肠杆菌性肝脓肿,病变直接蔓延至肺部;2例成染途径尚不明确,似为原发性肺部感染,为了排除隐性胆道感染为其原发病灶的可能性,对共中1例曾行十二指肠引流检查,结果阴性。根据我院少数上呼吸道感染病人咽拭培养分离 I will hospital from March 1962 to July 1964 admitted to E. coli pneumonia in 5 cases reported as follows. 5 cases were pure sputum culture growth of E. coli, sputum specimens before cleaning the mouth, and oral fluid culture without E. coli growth. 5 cases of male 2 cases, 3 females, aged 25 to 62 years. Infections: 2 cases of pneumonia in this group is secondary to E. coli sepsis, bacteria invade the lungs through the blood line; 1 case of secondary to E. coli liver abscess, the lesions spread directly to the lungs; 2 cases of pathogenicity is not yet Clearly, it seems that the primary pulmonary infection, in order to rule out the possibility of latent ductal infection of the primary lesion, a total of 1 cases had duodenal drainage examination, the result was negative. According to a small number of upper respiratory tract infection in our hospital pharyngeal swab culture separation