MRSA and multidrug-resistant Staphylococcus aureus in U.S. retail meats, 2010-2011.
Food Microbiol
; 62: 289-297, 2017 Apr.
Article
em En
| MEDLINE
| ID: mdl-27889161
ABSTRACT
Methicillin-resistant Staphylococcus aureus (MRSA) has been detected in retail meats, although large-scale studies are scarce. We conducted a one-year survey in 2010-2011 within the framework of the National Antimicrobial Resistance Monitoring System. Among 3520 retail meats collected from eight U.S. states, 982 (27.9%) contained S. aureus and 66 (1.9%) were positive for MRSA. Approximately 10.4% (107/1032) of S. aureus isolates, including 37.2% (29/78) of MRSA, were multidrug-resistant (MDRSA). Turkey had the highest MRSA prevalence (3.5%), followed by pork (1.9%), beef (1.7%), and chicken (0.3%). Whole-genome sequencing was performed for all 66 non-redundant MRSA. Among five multilocus sequence types identified, ST8 (72.7%) and ST5 (22.7%) were most common and livestock-associated MRSA ST398 was assigned to one pork isolate. Eleven spa types were represented, predominately t008 (43.9%) and t2031 (22.7%). All four types of meats harbored t008, whereas t2031 was recovered from turkey only. The majority of MRSA (84.8%) possessed SCCmec IV and 62.1% harbored Panton-Valentine leukocidin. Pulsed-field gel electrophoresis showed that all ST8 MRSA belonged to the predominant human epidemic clone USA300, and others included USA100 and USA200. We conclude that a diverse MRSA population was present in U.S. retail meats, albeit at low prevalence.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Staphylococcus aureus
/
Staphylococcus aureus Resistente à Meticilina
/
Microbiologia de Alimentos
/
Carne
Tipo de estudo:
Risk_factors_studies
Limite:
Animals
/
Humans
País como assunto:
America do norte
/
Asia
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article