Staphylococcus aureus is a Gram-high high-quality, spherical-shaped bacterium that is a member of the Firmicutes, and it's miles a ordinary member of the microbiota of the frame, frequently located within the top respiratory tract and on the skin. It is regularly high quality for catalase and nitrate discount and is a facultative anaerobe that may develop without the need for oxygen. Although S. Aureus typically acts as a commensal of the human microbiota it can additionally become an opportunistic pathogen, being a common cause of skin infections inclusive of abscesses, respiratory infections which include sinusitis, and food poisoning. Pathogenic strains frequently promote infections through generating virulence factors along with potent protein pollutants, and the expression of a cell-floor protein that binds and inactivates antibodies. The emergence of antibiotic-resistant strains of S. Aureus consisting of methicillin-resistant S. Aureus (MRSA) is a international hassle in scientific medication. Despite a whole lot studies and development, no vaccine for S. Aureus has been authorized. An envisioned 20% to 30% of the human population are long-term carriers S. Aureus which may be observed as a part of the normal pores and skin flora, in the nostrils, and as a everyday inhabitant of the lower reproductive tract of ladies.