임상검체에서 Escherichia spp.의 분리 빈도와 항균제감수성

Isolation Frequency and Antimicrobial Susceptibility of Escherichia Species from Clinical Specimens

  The 4,579 Escherichia spp. were isolated from total 121,294 clinical materials from Dec 1, 2004 to Nov 30, 2006 in “C” hospital. Isolation frequency of Escherichia spp were 99.7% in E. coli, 0.2% E. hermannii and 0.1% E. fergusonii. %. Escherichia spp. were more frequently isolated in over 50 age group(8.7%-20.7%) than the below 50 age group(2.1-10.4%). According to the specimen types, 59.7% of the isolated Escherichia spp. were from urine (random 45.9% and catheterized urine 13.8%). In the susceptibility analysis of the Escherichia spp., using VITEK Ⅱ AST cards, 25.3%(536/2121) were extended spectrum β-lactamase(ESBL) E. coli. The antimicrobial agents that showed over 90% susceptibility were imipenem, amikacin, piperacillin/tazobactam and nitrofurantoin.