Prevalence of Staphylococcus aureus and of methicillin-resistant S. aureus (MRSA) along the production chain of dairy products in north-western Greece.

摘要: The objective of this study was to estimate the prevalence methicillin-resistant Staphylococcus aureus (MRSA) in production chain dairy products. Of 367 tested samples (36 bulk tank milk (BTM), 19 products, 72 human, 185 animal, 55 equipment), 212 (57.8%) were found positive for S. aureus. Almost all isolates (99.6%) resistant at least one antimicrobial and 13.3% multi-drug (MDR), exhibiting resistance three or more antibiotic classes. Eleven (3%) contaminated by MRSA carrying mecA gene. None carried mecC Pandon-Valentine leucocidin (PVL) genes. Four spa types identified among isolates: t127, t3586, t1773, t4038, with t127 being most prevalent (7 out 11). Two them, t3586 isolated first time Greece. Furthermore, Pulse-Field Gel Electrophoresis (PFGE) analysis indicated clonal circulation through chain. presence MDR S. aureus, especially MRSA, animals products represents a potential threat spread pathogen community. results that animal environmental sources could be involved contamination along their therefore further investigation is needed control dispersion