What Causes Staph Skin Infections?
Staph infections are mainly caused by bacterium Staphylococcus aureus, and rarely by S. epidermidis, or S. saprophyticus. In staph carriers, S. aureus, lives in the nose and on the skin, and less commonly in the mouth, mammary glands, urinary, intestinal, and upper respiratory tracts (1). Staphylococcal infections usually remain localized at the portal of entry. What is Staphylococcus aureus?