Prevalence, Virulence, and Antimicrobial Resistance of spp. in Raw Milk, Beef, and Pork Meat in Northern Poland.

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ID: 52338
2019
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Abstract
The purpose of this study was to determine whether raw milk, unpasteurized dairy products, pork, and beef available for sale in the Kujawsko-Pomorskie and Wielkopolska regions in Poland are contaminated with spp. bacteria and may be a potential source of infection. For isolated strains, antibiotic susceptibility and the presence of genes responsible for virulence were examined. Material for research included 1058 food samples collected between 2014 and 2018 with 454 samples of raw milk and unpasteurized dairy products (milk from vending machines, milk from owners of dairy cows, cheese, milk cream) and 604 samples of raw meat (pork, beef). The results indicated that 9.3% of the samples were positive for spp., and was predominant in this study. bacteria was not found in milk collected from vending machines, as well as cheese and milk cream samples. was noted in 12.7% of beef samples, 11.8% of raw milk purchased from individual suppliers, and 10.9% of pork samples. Resistance to erythromycin (2.0%), azithromycin (3.1%), gentamicin (4.1%), tetracycline (65.3%), and ciprofloxacin (71.4%) was determined using the disc diffusion method. Furthermore, the prevalence of , , , , , , and genes were examined using the PCR method. The , , and genes exhibited the highest detection rate, but none of the genes were identified in 100% of the isolates. Statistically significant differences between the presence of virulence marker genes, including for , , and markers, were noted among different sources of the isolates. Differences in the distribution of , and were also shown between and strains. As a result of the analysis, it has been concluded that unpasteurized milk, beef, and pork could be a sources of pathogens. Moreover, this study revealed virulent properties of isolated from such food products and high resistance rates to fluoroquinolones, which may represent difficulties in campylobacteriosis treatment.
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andrzejewska2019prevalencefoods Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Andrzejewska, Małgorzata;Szczepańska, Bernadeta;Śpica, Dorota;Klawe, Jacek J;
Journal Foods (Basel, Switzerland)
Year 2019
DOI
E420
URL
Keywords
antimicrobial resistance virulence genes pork campylobacter spp., beef unpasteurized milk fatigue self-healing bio-binder bitumen

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