TABLE 1.

Characteristics of USA100 isolates selected for study^a

Study clinical isolate no.	Source	spa type	SCCmec type	PVL	% of LAC RBC lysis activity
111	Blood	t002	II	Negative	73.8
103	Blood	t002	II	Negative	51.5
116	Blood	t002	II	Negative	177.6
132	Blood	t002	II	Negative	70.9
134	Blood	t002	II	Negative	55.9
139	Blood	t002	II	Negative	51.1
333	Blood	t002	II	Positive	123
399	Blood	t002	II	Positive	102
119	Blood	t002	II	Negative	8.7
375	Blood	t002	II	Positive	13.5
191	Blood	t088	II	Negative	21.5
148	Blood	t002	II	Negative	22.9
155	Blood	t002	II	Negative	23.6
298	Blood	t002	II	Positive	23.6
412	Blood	t002	II	Positive	30.3
107	Blood	t002	II	Negative	35.7

^aPVL, Panton-Valentine leukocidin; RBC, red blood cell.