Occurrence of methicillin-resistant staphylococci in the pig-production chain in Ibadan, Nigeria.
Onderstepoort J Vet Res
; 88(1): e1-e4, 2021 Nov 30.
Article
em En
| MEDLINE
| ID: mdl-34879684
ABSTRACT
Staphylococcus species colonises humans and animals and is a major food contaminant with public health significance. Here, we assessed the occurrence of methicillin-resistant staphylococci (MRS) in the pig-production chain in Ibadan, Nigeria. Nares of 120 pigs and 10 farmers were sampled with sterile swabs whilst 54 pork samples were collected from a retail slaughterhouse. Staphylococcus species were isolated using enrichment, cefoxitin-aztreonam selective broth and Mannitol salt agar. Isolates were tested for susceptibility to cefoxitin (30 µg), oxacillin (1 µg) and vancomycin (30 µg). Methicillin-resistant staphylococci isolates were characterised using conventional biochemical tests. From 184 samples, 364 staphylococcal isolates were obtained. Amongst the 54 pork samples, 44.0% were contaminated with Staphylococcus species. Overall, 9 (2.5%) MRS were obtained and presumptively identified as Staphylococcus xylosus (n = 3), Staphylococcus sciuri (n = 3), Staphylococcus warneri (n = 2) and Staphylococcus cohnii (n = 1). There was no relationship between the prevalence of MRS between pigs and pig handlers in the farms, but Farm 2 had the highest frequency of 66.7% (p 0.05). Piglets had the highest prevalence of 66.7% (p 0.05) whilst MRS was absent in workers and pork samples. This study raises concerns about the cross-contamination of staphylococci in the food chain. Constant surveillance is imperative to ensure food safety.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Infecções Estafilocócicas
/
Doenças dos Suínos
/
Staphylococcus aureus Resistente à Meticilina
Tipo de estudo:
Risk_factors_studies
Limite:
Animals
País/Região como assunto:
Africa
Idioma:
En
Revista:
Onderstepoort J Vet Res
Ano de publicação:
2021
Tipo de documento:
Article