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Staphylococci

Staphylococci are Gram-positive bacteria that commonly colonize human skin and mucous membranes. Some species, including Staphylococcus aureus, can cause infections.

Staphylococcus aureus

Staphylococcus aureus is a bacterium that colonizes many people without causing disease. Under certain circumstances it may, however, cause infections, which are difficult to treat due to existing antibiotic resistances.