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Volume 17, Number 11—November 2011
Research

Group A Streptococcus emm Gene Types in Pharyngeal Isolates, Ontario, Canada, 2002–2010

Patrick R. Shea, Amy L. Ewbank, Javier H. Gonzalez-Lugo, Alexandro J. Martagon-Rosado, Juan C. Martinez-Gutierrez, Hina A. Rehman, Monica Serrano-Gonzalez, Nahuel Fittipaldi, Stephen B. Beres, Anthony R. Flores, Donald E. Low, Barbara M. Willey, and James M. MusserComments to Author 
Author affiliations: The Methodist Hospital Research Institute, Houston, Texas, USA (P.R. Shea, A.L. Ewbank, J.H. Gonzalez-Lugo, A.J. Martagon-Rosado, J.C. Martinez-Gutierrez, H.A. Rehman, M. Serrano-Gonzalez, N. Fittipaldi, S.B. Beres, A.R. Flores, J.M. Musser); Texas Children’s Hospital, Houston (A.R. Flores); Baylor College of Medicine, Houston (A.R. Flores); Mount Sinai Hospital/University Health Network, Toronto, Ontario, Canada (D.E. Low, B.M. Willey); Ontario Agency for Health Protection and Promotion, Toronto (D.E. Low); University of Toronto, Toronto (D.E. Low)

Main Article

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

Main Article

Page created: October 24, 2011
Page updated: October 24, 2011
Page reviewed: October 24, 2011
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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