By James Wright, D.V.M., Ph.D., D.A.C.V.P.M.

Staphylococcus aureus is a large family of Gram-positive bacteria with many genetically diverse strains that can produce skin and systemic disease in people and are important foodborne pathogens. Indiscriminate use of antibiotics in human medicine probably has played a role in the emergence of methicillin-resistant Staphylococcus aureus (MRSA), which was detected first in Great Britain in 1961. Other factors, however, likely were involved. READ MORE