Isolation of ST398 methicillin-resistant Staphylococcus aureus from pigs at abattoirs in Tohoku region, Japan

The Journal of Veterinary Medical Science

article

Yoshimasa SASAKI¹  Makiko YAMANAKA³  Kazuhisa NARA³  Shigeko TANAKA³  Masashi UEMA¹  Tetsuo ASAI²  Yutaka TAMURA⁵ 

[1] Division of Biomedical Food Research, National Institute of Health Sciences;Department of Applied Veterinary Science, the United Graduate School of Veterinary Science, Gifu University;Towada Meat Inspection Center of Aomori Prefecture;Education and Research Center for Food Animal Health, Gifu University (GeFAH);Department of Health and Environmental Sciences, School of Veterinary Medicine, Rakuno Gakuen University

关键词: Methicillin-resistant Staphylococcus aureus;    pig;    ST398;    zinc resistance;   

DOI  :  10.1292/jvms.20-0184

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

Here, we investigated the presence of ST398 livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) in nasal swabs of 420 slaughtered pigs from 84 farms at three abattoirs in Tohoku, Japan. MRSA were isolated from 13 (3.1%) samples from 9 (10.7%) farms at two abattoirs. All isolates were classified as ST398 and were resistant to ampicillin and tetracycline. Ten and three isolates were classified as Staphylococcal Cassette Chromosome mec (SCC mec ) types V and IVa, respectively. All type V isolates possessed czrC. The minimum inhibitory concentrations (MICs) of zinc chloride against types IVa and V were 1 and 4 mM, respectively. This study shows the presence of ST398 MRSA in pigs in this region. Antimicrobials and zinc compounds in feed and drugs might select SCC mec type V ST398 MRSA.

【 授权许可】

Unknown