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Multidrug-resistant bacteria, including ESBL-producing E. coli and VRE, were found in Austrian chicken meat. While MRSA was absent, these resistant strains highlight food safety concerns in the food chain.

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Area of Science:

  • Food Safety
  • Microbiology
  • Public Health

Background:

  • Multidrug-resistant (MDR) bacteria, including extended-spectrum beta-lactamase (ESBL) Enterobacteriaceae, methicillin-resistant Staphylococcus aureus (MRSA), and vancomycin-resistant Enterococci (VRE), are a growing global health concern.
  • The presence of MDR bacteria outside clinical settings and their potential contamination of food, particularly meat, necessitates investigation.

Purpose of the Study:

  • To determine the prevalence of MDR bacteria in chicken meat available on the Austrian market.
  • To identify specific types of MDR bacteria, including ESBL Enterobacteriaceae, methicillin-resistant Staphylococci, and VRE, in Austrian chicken meat.

Main Methods:

  • Analysis of 50 chicken meat samples of Austrian origin.
  • Testing for the presence of ESBL Enterobacteriaceae, methicillin-resistant Staphylococci, and VRE.
  • Characterization of resistance genes using PCR and sequencing.

Main Results:

  • ESBL-producing E. coli were detected in 26 samples.
  • Five samples contained mecA gene-harboring Staphylococci, but no MRSA.
  • Four samples tested positive for VRE.
  • 48% of samples were free from the investigated MDR bacteria.
  • CTX-M-1 and SHV-12 were the predominant ESBL genes identified.

Conclusions:

  • MDR bacteria, particularly ESBL-producing E. coli and VRE, are present in Austrian chicken meat.
  • The study did not detect MRSA in the analyzed samples.
  • Findings underscore the importance of monitoring MDR bacteria in the food supply chain to mitigate public health risks.