Table 1.

Epidemiologic features of group A streptococcal strains under study

emm patternNo. of strains representedNo. of unique M or emm typesNo. (%) isolated from:
NasopharynxImpetigoUnknown site
A, B, or C351532 (91)2 (6)1 (3)
D28175 (18)19 (68)4 (14)
E201310 (50)10 (50)0 (0)