5. Conclusion

The S. aureus infection is prevalent in dairies of family production and associated to the expression of virulence factors that characterize the predominant S. aureus pathotypes in dairy cows in the Toluca Valley in México central region. Phenotypes and genotypes of S. aureus associated with the production of toxins, capsular exopolysaccharide, and MRSA strains, to establish a potential risk to health, are highlighted. The S. aureus infection level in the cow herds can be compromised with food safety and establishing animal and human health risk.
