沙门菌属对常用抗菌药物敏感性的变化

目的比较近年来伤寒及甲型副伤寒沙门菌属药物敏感性的变化趋势。方法本研究中自2001-2004年分离的沙门菌属菌株42株,其中伤寒沙门菌属22株,甲型副伤寒沙门菌属20株,集中作菌株的鉴定及抗菌药物敏感性的检测。结果药敏结果显示分离的沙门菌属菌株90.0%对氯霉素敏感,对环丙沙星及左氧氟沙星的敏感率分别为88.2%及96.8%,对酶抑制剂复合制剂呈94.7%~100.0%敏感;伤寒沙门菌属对头孢菌素的敏感性自2001-2004年呈上升趋势,而甲型副伤寒沙门菌属则呈下降趋势。结论根据沙门菌属对抗菌药物敏感率的变化,如对环丙沙星敏感率的下降及对氯霉素敏感性的恢复,对于伤寒、副伤寒的经验抗菌治疗方案需要进一步调整。

Changing Trends in Antibiograms of Salmonella isolates

OBJECTIVE To compare the changing trends of antibiograms of Salmonella typhi and S.paratyphi A isolates.METHODS A total of 42 isolates of Salmonella obtained from blood cultures patients in the First Affiliated Hospital of Chinese Medical University between 2001-2004 were included in the study.K-B test was used for the antimicrobial susceptivity test and the results were read based on National Committee for Clinical Laboratory Standards(NCCLS) of USA.RESULTS Twenty two isolates were identified as S.typhi and 20 were identified as S.paratyphi A.Sensitivity of S.typhi isolates to cephalosporins and chloramphenicol was found to have increased from 2001 to 2004 while that of S.paratyphi A showed a decline,meanwhile there was obviously increasing in resistance to ciprofloxacin.CONCLUSIONS Perhaps the schedule of empirical treatment of typhoid fever needs to be adjusted.