TABLE 1.

emm sequences of pharyngeal S. pyogenes isolated in Spain (1996 to 1999)

No. of isolatesemm typeNo. (%) of isolates resistant to erythromycina collected in:No. % of isolates susceptible to erythromycin collected in:
1996-1997 (n = 145)1998-1999 (n = 170)Total (n = 315)1996-1997 (n = 133)1998-1999 (n = 166)Total (n = 299)
144472 (49.7)57 (33.5)129 (41.0)8 (6.0)7 (4.2)15 (5.0)
75st181542 (29.0)23 (13.5)65 (20.6)8 (6.0)2 (1.2)10 (3.3)
671215 (10.3)22 (12.9)37 (11.7)19 (14.3)11 (6.6)30 (10.0)
39752 (1.4)35 (20.6)37 (11.7)1 (0.8)1 (0.6)2 (0.7)
3811 (0.6)1 (0.3)11 (8.3)26 (15.7)37 (12.4)
3491 (0.7)5 (2.9)6 (1.9)8 (6.0)20 (12.0)28 (9.4)
34311 (8.3)23 (13.9)34 (11.4)
25283 (2.1)3 (1.8)6 (1.9)6 (4.5)13 (7.8)19 (6.4)
2469 (5.3)9 (2.9)8 (6.0)7 (4.2)15 (5.0)
22221 (0.7)8 (4.7)9 (2.9)3 (2.3)10 (6.0)13 (4.3)
17st200214 (10.5)3 (1.8)17 (5.7)
1625 (3.4)5 (1.6)6 (4.5)5 (3.0)11 (3.7)
16446 (4.5)10 (6.0)16 (5.4)
12118 (6.0)4 (2.4)12 (4.0)
10776 (3.5)6 (1.9)4 (2.4)4 (1.3)
8788 (4.8)8 (2.7)
6135 (3.8)1 (0.6)6 (2.0)
5501 (0.7)1 (0.3)4 (3.0)4 (1.3)
3733 (1.8)3 (1.0)
2671 (0.6)1 (0.3)1 (0.6)1 (0.3)
2872 (1.5)2 (0.7)
2192 (1.2)2 (0.7)
2662 (1.5)2 (0.7)
282 (1.2)2 (0.7)
2412 (1.4)2 (0.6)
2fcrV1 (0.7)1 (0.3)1 (0.8)1 (0.3)
2891 (0.8)1 (0.6)2 (0.7)
1611 (0.6)1 (0.3)
1581 (0.6)1 (0.3)
1331 (0.8)1 (0.3)
  • a The breakpoint for erythromycin was ≥1 μg/ml.