Author(s): W. Braide, L.C. Madu, S.A. Adeleye, M.C. Korie, C.I. Akobondu
There has been an increasing attention globally over the rising treatment failures caused by Extended Spectrum Beta-Lactamase (ESBL) producing organisms when new generation antibiotics are used. This study was carried out to investigate the prevalence of ESBL producing Escherichia coli and Pseudomonas aeruginosa isolates from the Federal Medical Centre (FMC) Owerri, Imo State, Nigeria. Two hundred and fifty clinical isolates comprising, E. coli (136) and P. aeruginosa (114) was used for the study. Antimicrobial susceptibility testing of isolates was determined using the disc diffusion method. ESBL phenotypes were further determined by the double disc synergy test using Ceftazidime, Cefotaxime, Ceftriazone and Amoxicillin clavulanic acid. Out of the 250 isolates tested, 114 (45.6%) were positive for ESBL production comprising 66(26.4%) E. coli and 48(19.2%) P. aeruginosa. The antimicrobial sensitivity testing showed that the highest resistance of 100% was recorded with Cephalexine while the least of 0% was recorded with the aminoglycosides and quinolones, giving a clear indication that the aminoglycosides and quinolnes could be recommended for the treatment of ESBL infections caused by these organisms. The result of the present study showed that there is apparently high prevalence of ESBL producing E. coli and P. aeruginosa in the Federal Medical Centre (FMC) Owerri, Imo State, Nigeria.
Escherichia coli, ESBL, Prevalence, Antimicrobial susceptibility
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