Among 232 strains bacteria from 3024 samples,gram negative bacteria was 60%,E-coli,Klebsiella,serratia liquefaciens were ranked respectively.

• 共检测标本3024份,分离出细菌232株,革兰阴性菌为首要致病菌,占60%25,其中肺炎克雷伯菌、大肠埃希菌、液化沙雷菌列前3位。