ANTIBIOTIC SUSCEPTIBILITY PROFILE OF KLEBSIELLA PNEUMONIAE STRAINS ISOLATED FROM DRINKING AND SURFACE WATER
Abstract
Presence of Klebsiella pneumoniae (K. pneumoniae) in drinking and surface water indicates fecal contamination of human or animal origin. K. pneumoniae has the ability to acquire and transfer resistance genes. Isolates found in the environment may represent a reservoir of these genes, which can be transmitted among different bacterial species. The aim of the study was identification and testing susceptibility of K. pneumoniae to antibiotics after isolation from drinking and surface water. Prospective study (conducted from October the 1st 2015 to December the 31st 2015) included 1276 samples of drinking and surface water. The samples were processed by membrane-filter technique. Standard biochemical tests were used for identification of K. pneumoniae. Antimicrobial susceptibility was determined by disk-diffusion method. K. pneumoniae was found in 2.98% (38/1276) of samples, from both surface 42.11% (16/38) and drinking water 57.89% (22/38). Tested strains were resistant to ampicillin, but resistance to other antibiotics was not confirmed. K. pneumoniae could be found in drinking water despite the purification and chlorination. In our study strains isolated from drinking and surface water were susceptible to commonly used antibiotics, without any markers of acquired resistance.
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