Volume 17, Number 11—November 2011
Research
Group A Streptococcus emm Gene Types in Pharyngeal Isolates, Ontario, Canada, 2002–2010
Table 2
Invasive indexes for emm types in group A Streptococcus isolates from patients with invasive disease and pharyngitis, Ontario, Canada, 2002–2010
emm type | Invasive disease frequency | Pharyngitis frequency | Invasive index |
---|---|---|---|
1 | 0.298 | 0.142 | 2.09 |
2 | 0.021 | 0.094 | 0.22 |
3 | 0.051 | 0.037 | 1.38 |
4 | 0.057 | 0.150 | 0.38 |
5 | 0.028 | 0.025 | 1.12 |
6 | 0.029 | 0.060 | 0.48 |
11 | 0.031 | 0.017 | 1.82 |
12 | 0.081 | 0.138 | 0.59 |
22 | 0.005 | 0.007 | 0.71 |
28 | 0.051 | 0.098 | 0.52 |
49 | 0.036 | 0.002 | 16.7 |
75 | 0.022 | 0.034 | 0.65 |
77 | 0.024 | 0.058 | 0.41 |
78 | 0.006 | 0.002 | 3.0 |
89 | 0.058 | 0.058 | 1.0 |
Others | 0.202 | 0.078 | 2.59 |
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