Phenotypic and genotypic detection of virulence factors of Staphylococcus aureus isolated from clinical and subclinical mastitis in cattle and water buffaloes from different farms of Sadat City in Egypt.

Aim: To characterize Staphylococcus aureus from clinical and subclinical mastitis and identify virulence factors.

Materials And Methods: Two hundred and two milk samples were collected, 143 from mastitic cattle and buffaloes 94 and 49, respectively, and 59 from apparently healthy cattle and buffaloes 35 and 24, respectively.

Results: California mastitis test was applied and positive prevalence were 91.