Table I.

Distribution of sequence clusters among healthcare workers (HCWs) and patients

	Sequence cluster
	Total	U	A	B	C	D
Total	50	12 (24%)	31 (62%)	3 (6%)	2 (4%)	2 (4%)
HCWs	30	4 (13%)	23 (77%)	1 (3%)		2 (7%)
With direct patient contact	19	3 (16%)	14 (74%)			2 (11%)
With indirect patient contact	10	1 (10%)	9 (90%)
No patient contact	1		0	1 (100%)
Patients	20	8 (40%)	8 (40%)	2 (10%)	2 (10%)	0
Positive at admission	13	8 (62%)	1 (8%)	2 (15%)	2 (15%)	0
Positive during admission	7	0	7 (100%)	0	0	0

U, unique.