Prevalence, Antibiotic Resistance And Genetic Diversity Of Salmonella Serovars Isolated From Various Meats Of Wet And Hypermarkets In Pulau Pinang And Perlis Malaysia
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Date
2018-05
Authors
Nidaullah, Hafiz
Journal Title
Journal ISSN
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Publisher
Universiti Sains Malaysia
Abstract
Present study has been endeavored to assess various niches of Salmonella in the chicken processing environment at various wet markets and small-scale processing plant in Penang and Perlis, Malaysia. In addition, qualitative risk characterization of antibiotic resistance, genotyphic resistance determinants, virulence potential and genetic diversity of Salmonella serovars isolated from various raw meats collected from different wet and hypermarkets was carried out in Penang, Malaysia. A total of 582 samples including chicken processing environmental samples (182) and various raw meat samples including beef, chicken, mutton, fish were collected from different wet markets (240) and hypermarkets (160). As a result entire environment encompassing chicken processing line was found contaminated with Salmonella (86.1%) along with chicken meat (100%). Amongst retail raw meats collected from traditional wet and hyper markets, overall prevalence of Salmonella was 31.25% (125/400), out of which 41.67% was found in former and 15.63% in later case. Further, raw chicken meat was found to be highly contaminated in both wet (83.3%) and hyper (35%) markets. Maximum resistance was found for tetracycline (57.6%), followed by sulfamethoxazol (48.8%), streptomycin (25.6%) and ampicillin (14.4%). Risk characterization model expressed four cases of very
high additional risk (VHAR) of resistance; two cases in fish meat (streptomycin and ampicillin) and one case each in beef (streptomycin) and chicken meat (streptomycin). Distribution of various SPI (Salmonella pathogenic Island) genes among Salmonella serovars showed 100% prevalence of invA (SPI-1) gene.
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Keywords
Various niches of Salmonella in the chicken processing , at various wet markets and small-scale processing plant