Staphylococcal and streptococcal infections

Staphylococci and streptococci are leading causes of healthcare community-acquired bacterial infections worldwide. Within each genus, virulent species such as Staphylococcus aureus, Streptococcus pyogenes pneumoniae associated with diverse syndromes superficial infection, invasive infection exotoxin production. less coagulase-negative staphylococci viridans common harmless human commensals but frequently cultured from clinical samples. For these organisms, differentiating opportunistic contamination is a major diagnostic challenge. Infections by typically prosthetic material, increasing use implanted medical devices has led to their rising importance pathogens. Medically important staphylococcal S. aureus epidermidis resistant commonly used antibiotics. Clinicians should have sound understanding how cause the they do treated.