TABLE 1.

Frequency of detection of femB, mecA, ileS-2, and icaAB loci

Group of Staphylococcus isolates	Total no. of isolates	No. of isolatesa carrying:
		femB	mecA	ileS-2	icaAB	mecA, and icaAB	mecA, and ileS-2	mecA, ileS-2, and icaAB	mecA−, ileS-2−, and icaAB
Randomly selected	58b	56 (96.5), 91.7-100	56 (96.5), 91.7-100	12 (20.7), 9.7-31.4	52 (89.6), 81.5-97.7	40 (69), 56.7-81.2	1 (1.7), <6	11 (19), 8.6-29.4	2 (3.4), <9
Recovered from catheters	7c	2 (28.6), 10.1-47	2 (28.6), 10.1-47	2 (28.6), 10.1-47	3 (42.9), 22.7-63.1		2 (28.6), 10.1-47		3 (42.9), 22.7-63.1

^aValues in parentheses are percentages. For each entry, the second value given is the 95% confidence interval.

^bAll isolates were S. aureus.

^cFive isolates were S. epidermidis, and two isolates were S. aureus.