Low prevalence of vancomycin- and bifunctional aminoglycoside-resistant enterococci isolated from poultry farms in Malaysia

International Journal of Food Microbiology
Yean Yean ChanM Ravichandran

Abstract

A total of 225 samples from poultry farms and the surrounding environment were screened for vancomycin-resistant enterococci (VRE) and bifunctional aminoglycoside-resistant enterococci using conventional microbiological tests and a nanoplex polymerase chain reaction (PCR) assay. Three (1.3%) of the samples were found to contain vancomycin-resistant isolates (MIC>256 microg/mL) that had a vanA genotype. The three vanA positive VRE isolates were identified as different species. Only one isolate (Enterococcus faecium F 4/13_54) was sensitive to teicoplanin (MIC<0. 12-0.35 microg/mL); the other two VRE (E. faecalis A 21_35 and E. gallinarum F 5/10_1) were resistant to teicoplanin (MIC 3.6-->16 microg/mL). The vanC genotype was observed in nine (4%) of the samples collected. High-level gentamicin-resistant (HLGR) enterococci (with MIC ranging between 100 and 500 microg/mL) were detected in 44 samples. However, only 40 of these were found to possess the aac(6')-aph(2'') gene. The overall prevalence of VRE among the samples from the poultry farms and environment was 5.3%, but the prevalence of the clinically significant vanA VRE was 1.3%, and the prevalence of bifunctional aminoglycoside-resistant enterococci was slightly higher, at 1...Continue Reading

Citations

Jun 29, 2010·Foodborne Pathogens and Disease·Anette M HammerumOle E Heuer
May 8, 2015·Environmental Science and Pollution Research International·Biao ChenBoping Ye
Dec 24, 2011·International Journal of Food Microbiology·Tetsuya HaradaYuko Kumeda
Jul 5, 2016·International Journal of Systematic and Evolutionary Microbiology·Tetsuya HaradaYoshimasa Yamamoto
Oct 24, 2017·Microbial Drug Resistance : MDR : Mechanisms, Epidemiology, and Disease·Mohamed O Ahmed, Keith E Baptiste

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