Volume 17, Number 11—November 2011
Research
Group A Streptococcus emm Gene Types in Pharyngeal Isolates, Ontario, Canada, 2002–2010
Figure 3

Figure 3. Frequency of emm3 strains among patients with group A Streptococcus pharyngitis and invasive disease, Ontario, Canada, 2002–2010, excluding 2004–2005. Black line indicates yearly frequency of invasive emm3 isolates; red line indicates emm3 frequency among pharyngeal isolates.
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