Human health risks associated with antimicrobial-resistant enterococci and Staphylococcus aureus on poultry meat

Valeria Bortolaia, Carmen Espinosa-Gongora, L. Guardabassi

Research output: Contribution to journalReviewpeer-review

Abstract

Enterococci and staphylococci are frequent contaminants on poultry meat. Enterococcus faecalis, Enterococcus faecium and Staphylococcus aureus are also well-known aetiological agents of a wide variety of infections resulting in major healthcare costs. This review provides an overview of the human health risks associated with the occurrence of these opportunistic human pathogens on poultry meat with particular focus on the risk of food-borne transmission of antimicrobial resistance. In the absence of conclusive evidence of transmission, this risk was inferred using data from scientific articles and national reports on prevalence, bacterial load, antimicrobial resistance and clonal distribution of these three species on poultry meat. The risks associated with ingestion of antimicrobial-resistant enterococci of poultry origin comprise horizontal transfer of resistance genes and transmission of multidrug-resistant E faecalis lineages such as sequence type STI6. Enterococcus faecium lineages occurring in poultry meat products are distantly related to those causing hospital-acquired infections but may act as donors of quinupristin/dalfopristin resistance and other resistance determinants of clinical interest to the human gut microbiota. Ingestion of poultry meat contaminated with S. aureus may lead to food poisoning. However, antimicrobial resistance in the toxin -producing strains does not have clinical implications because food poisoning is not managed by antimicrobial therapy. Recently methicillin-resistant S. aureus of livestock origin has been reported on poultry meat. In theory handling or ingestion of contaminated meat is a potential risk factor for colonization by methicillin-resistant S. aureus. However, this risk is presently regarded as negligible by public health authorities. Clinical Microbiology and Infection (C) 2015 European Society of Clinical Microbiology and Infectious Diseases. Published by Elsevier Ltd. All rights reserved.
Original languageEnglish
JournalClinical Microbiology and Infection
Volume22
Issue number2
Pages (from-to)130-140
Number of pages11
ISSN1198-743X
DOIs
Publication statusPublished - 2016
Externally publishedYes

Keywords

  • Broiler
  • chicken
  • Enterococcus faecalis
  • Enterococcus faecium
  • foodborne transmission
  • Staphylococcus aureus
  • turkey
  • Microbiology (medical)
  • Infectious Diseases
  • Chicken
  • Foodborne transmission
  • Turkey
  • Animals
  • Drug Resistance, Bacterial
  • Food Microbiology
  • Gene Transfer, Horizontal
  • Humans
  • Livestock
  • Meat
  • Methicillin-Resistant Staphylococcus aureus
  • Poultry
  • Poultry Diseases
  • INFECTIOUS
  • MICROBIOLOGY
  • LIVESTOCK-ASSOCIATED MRSA
  • CHICKEN MEAT
  • VANCOMYCIN RESISTANCE
  • RETAIL CHICKEN
  • ANIMAL ORIGIN
  • RAW MEAT
  • ANTIBIOTIC-RESISTANCE
  • FAECIUM ISOLATE
  • PUBLIC-HEALTH
  • FOOD SAMPLES

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