Memory CD4 and CD8 T lymphocyte proliferation in vaccinated dairy cows with different histories of Staphylococcus aureus mastitis.

Staphylococcus aureus mastitis constitutes a serious threat to dairy cows. The reasons why available vaccines are not fully effective remain poorly understood; thus, in the present study, we investigated CD4 and CD8 T lymphocyte proliferation in dairy cows vaccinated with a polyvalent mastitis vaccine that had distinct precedent Staphylococcus aureus mastitis. We studied 17 S.

Molecular Typing and Antimicrobial Susceptibility Profile of Isolates Recovered from Bovine Mastitis and Nasal Samples.

In the present study, we aimed to determine the antimicrobial resistance and molecular typing of recovered from transient and persistent intramammary infections and nares/muzzles in dairy cows. We investigated the antimicrobial resistance of 189 strains using a broad antimicrobial susceptibility profile. Furthermore, 107 isolates were strain-typed using staphylococcal protein-A (spa) typing.