E-test antibiotic susceptibility of E.coli strains isolated from hospital acquired infections of Imam Khomeini hospital, Ilam, Iran

Escherichia coli (E.coli) as a main cause of both nosocomial and communityacquired infections in humans have a relative potential to develop resistance. Nowadays, most infections caused by ESBL-producing E.coli (ESBLEC) had mostly been described as nosocomial acquired or nursing home related. In this study, we employed E-test assay to detect antibiotic resistance of E.coli strains and determine MIC of antibiotics.

Thirty E.coli strains gathered from Imam Khomeini hospital of Ilam, and cultured on TSB and bacterial suspension prepared by 0.5 µF concentration for Etest. Mueller Hinton agar and E-test strips of Amikacin, Cefepime, Ceftazidime, Ceftriaxone, Gentamicin, Meropenem, Nitrofurantoin, Piperacillin/Tazobactam, Tetracycline, Ticarcillin/ Clavulanic acid, Tobramycin, Trimethoprim were used

Resistance to Ceftriaxone, Tobramycin, Gentamicin, Ticarcillin/ Clavulanic, Amikacin were 19.8%, 26.4%, 23.3%, 62.7%, 70.3%, respectively.

the results indicated, E.coli strains in this study were high sensitivity to Meropenem ,Nitrofuratoin, Ciprofloxacin , Ceftazidime, Cefepime.