TABLE 3.

Association among macrolide resistance genes and the emm types isolated during the 11 years of study^a

emm type	No. of invasive GAS isolates (no. of isolates with the indicated associated gene)
	1994 to 1996 surveillance study	1997 to 2002	2003 to 2005 surveillance study
1	16	8	17 [2 mef(A)]
2	1 [1 mef(A)]	1 [mef(A)]	3 [2 mef(A)]
3	6	7	9
4	3 [2 mef(A)]		8 [4 mef(A)]
5	2		3
6	5 [1 erm(B)]	1	5
9			3
11	1	1	2
12	4 [1 erm(B)]		11 [2 erm(B) 3 mef(A)]
18	1	2	7 [1 erm(B)]
22	1	2 [2 erm(B)]	1
24		1	1
27/77	1	1 [1 erm(A)]	2 [1 erm(A)]
28	1	1	1
33			1
44/61	2		4 [1 mef(A)]
53	2
58		1	1
68	1
70			1
75	4		1
76			1
78	1		2
79		1
85	1
87	1
89	19 [16 erm(B)]	9 [9 erm(B)]	2 [1 erm(B)]
102	1
108	1	3	1
110	2
114	1
118	1		2
Total (n = 207)	79	39	89

^aNew associations observed in the Strep-EURO study are indicated in boldface.