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１９９１年，利用自本院住院病人各类标本检出的４４９株细菌（包括真菌，下同），调查医院感染的若干特点。①与医院感染相关的细菌占６９．３％（３１１株），涉及１７６名病人的２４０次感染。②感染类型广泛，以肺部感染、创面感染与尿路感染为主，分别占３７．９％、２５．８％与１７．５％；其中７０．４％（１６９人次）为单─菌感染，２９．６％为复数菌感染。③引起医院感染的细菌中，以铜绿假单胞菌、肠杆菌属多见。④据药敏试验结果，金黄色葡萄球菌对林可霉素、庆大霉素、红霉素和丁胺卡那霉素的耐药率，引起医院感染者分别明显高于引起非医院感染者；肺炎克雷伯氏菌对头孢拉定、头孢三嗪、庆大霉素与丁胺卡那霉素的耐药率，引起医院感染者和引起非医院感染者之间有统计学差异。⑤发生医院感染者的治愈率较低，病死率较高。
In 1991, 449 strains of bacteria (including fungi, the same below) detected from various specimens of inpatients in our hospital were used to investigate some characteristics of nosocomial infections. ① 69.3% (311 strains) of bacteria associated with nosocomial infections involved 240 infections in 176 patients. (2) A wide range of infections, with pulmonary infections, wound infections and urinary tract infections, accounted for 37.9%, 25.8% and 17.5% respectively; 70.4% (169) were single-bacteria infections , 29.6% for multiple bacterial infections. ③ cause nosocomial infections in bacteria, to Pseudomonas aeruginosa, Enterobacter more common. ④ According to susceptibility test results, the resistance rates of Staphylococcus aureus to lincomycin, gentamicin, erythromycin and amikacin caused hospital infection were significantly higher than those caused by non-hospital infection ; Klebsiella pneumoniae to cefradine, cefotaxime, gentamicin and amikacin drug resistance rates, caused by hospital infection and cause non-hospital infection were statistically significant. ⑤ hospital infection occurred in the lower cure rate, higher mortality.