Antimicrobial resistance and virulence characteristics in 3 collections of staphylococci from bovine milk samples

Mastitis is a prevalent disease in dairy cattle, and staphylococci are among the most common causative pathogens. Staphylococci can express resistance to range of antimicrobials, which methicillin particular public health concern. Additionally, Staphylococcus aureus carries variety virulence factors, although less understood about non-aureus (NAS). The aim our study was identify characterize 3 collections staphylococcal isolates from bovine milk samples regarding antimicrobial resistance, with emphasis on their carriage genes typically displayed by Staph. aureus. A total 272 collected Norway Belgium 2016 were included, distributed as follows: group 1, Norway, 100 isolates; 2, Flanders, Belgium, 64 3, Wallonia, 108 isolates. Species identification performed use MALDI-TOF mass spectrometry. Phenotypic determined via disk diffusion, PCR used for detection genes, mecA mecC, genes. Antimicrobial epidermidis haemolyticus all different groups, trimethoprim-sulfonamide frequently occurring well Resistance penicillin observed 1. Ten Belgian (1 9 3) carried determinant mecA: 5 2 farms NAS farms. Almost positive at least screened whereas, total, only 8 harbored any same Our contributes continuous need knowledge food-producing animals basis better understanding occurrence traits these bacteria.