Table I.

Documented virulence factors shared between S aureus and coagulase-negative staphylococci.2, 6, 7

Staphylococcal species	Virulence factors
S aureus	eta, etb, seg, she, sei, se1j, se1k, se1l, se1m, se1n, se1o, se1p, se1r, ses, set, se1u, se1v, tsst-1, mecA, pvl
Staphylococcus epidermidis	seh, sej, mecA
Staphylococcus haemolyticus	seh, sej, mecA, pvl
Staphylococcus hominis	seh, sej
S lugdunensis	seh
S schleiferi	seh, sej, mecA
Staphylococcus saprophyticus	seh, sej
S simulans	seh, sej, mecA, pvl
Staphylococcus xylosus	seh, mecA

eta, Exfoliative toxin a; etb, exfoliative toxin b; se, staphylococcal enterotoxinlike toxin; tsst, toxic shock syndrome toxin-1.