Identification and Antimicrobial Susceptibility of Fecal Coliforms Isolated from Surface Water
Aneta Łuczkiewicz1, Katarzyna Jankowska1, Julianna Kurlenda2, Krystyna Olańczuk-Neyman1
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1Faculty of Civil and Environmental Engineering, Gdańsk University of Technology,
G. Narutowicza 11/12, Gdańsk 80-233, Poland
2Department of Bacteriology, Mikołaj Kopernik Hospital,
Monte Cassino 13, 75-340 Koszalin, Poland
Pol. J. Environ. Stud. 2011;20(4):941-950
Of 274 fecal coliforms isolated from two watercourses influencing the costal water quality of the Gdańsk and Puck bays, 265 were identified as Escherichia coli. The remained strains belonged to: Acinetobacter spp. (n=1), Enterobacter spp. (n=3), Klebsiella spp. (n=4), and Shigella spp. (n=1). The susceptibility of 222 E. coli was tested against 19 antimicrobial agents: aminoglycosides, carbapenems, cephalosporines, folate antagonists, fluoroquinolones, monobactam, penicillins, penicillins/β-lactamase inhibitors, and tetracycline. The highest number of isolates was resistant to penicillins (ampicillin 21% and piperacillin 14%), as well as to tetracycline (16%). Up to 19% of E. coli isolates were resistant to 3 or more of the analyzed antimicrobial agents, and 9% were regarded as multiple-antibiotic-resistant (MAR) strains. Two of the analyzed isolates were regarded as extended-spectrum β-lactamase – producing strains.
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