MRSA in Pig Population


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Polish Journal of Microbiology

Polish Society of Microbiologists

Subject: Microbiology


ISSN: 1733-1331
eISSN: 2544-4646





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VOLUME 66 , ISSUE 3 (September 2017) > List of articles

MRSA in Pig Population

Meldra Ivbule * / EdvĪns Miklaševičs / Liene Čupāne / Laima Bērziņa / Andris Bāliņš / Anda Valdovska

Keywords : Staphylococcus aureus, antimicrobial resistance zoonosis, MRSA in pig far

Citation Information : Polish Journal of Microbiology. Volume 66, Issue 3, Pages 383-392, DOI:

License : (CC BY-NC-ND 4.0)

Received Date : 11-September-2016 / Accepted: 02-February-2017 / Published Online: 27-September-2017



Methicillin resistant Staphylococcus aureus (MRSA) is widespread worldwide in different types of animal species and as a zoonosis takesa great risk for human health not only as a food toxicoinfection, but also as a highly resistant pathogen causing serious soft tissue infectious, septicaemia and even death. One of the most affected food-producing animal species is swine in the production of which new antibiotics in big amounts are used more and more continuously, increasing antimicrobial resistance. In this study several commercial pig farms and pigs with different age groups as well as farm workers and samples from environment were examined with the purpose of detecting MRSA prevalence and evaluating antimicrobial resistance. A total of 85 isolated MRSA strains were characterised by conventional microbial and molecular methods. MRSA was found in all farms. MRSA prevalence in different pig age groups and farms varied from none to 79.2% reaching higher values among 3–3.5 (26.6%) and 4–4.5 (31.9%) old pigs. The 98.7% of 74 further investigated MRSA isolates were resistant to penicillin, 94.9% to tetracycline, 45.6% to cephalexin and 10 different spa types were found among which spa type t011 was the most widespread. To the best of our knowledge, this is the first time MRSA was researched in sow milk and the first description of the presence of MRSA in several age groups of pigs in Latvia.

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