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Volume 11, Number 1—January 2005


Invasive Group A Streptococcal Infections, Clinical Manifestations and Their Predictors, Montreal, 1995–2002

Maria-Graciela Hollm-Delgado*†, Robert Allard*†‡, and Pierre A. Pilon*‡
Author affiliations: *Unité Maladies Infectieuses, Montréal, Québec, Canada; †McGill University, Montreal, Québec, Canada; ‡Université de Montréal, Québec, Canada

Main Article


Adjusted odds ratio (OR) for factors associated with death attributable to invasive group A streptococcal infections, Montreal, Canada, 1995–2002

Variable OR (95% CI)*
Age (y) 1.04 (1.0–1.1)†
Underlying medical conditions
  No cancer Referent
  Cancer 4.14 (1.6–10.5)
Primary site of infection
  Not cellulitis Referent
  Cellulitis 0.38 (0.1–1.0)
  Not pneumonia Referent
  Pneumonia 3.62 (1.4–9.0)
Living environment
  Not working or living in hospital Referent
  Working or living in hospital 3.71 (1.0–13.6)
M serotypes
  Not M2 Referent
  M2 10.69 (0.5–220)

*CI, confidence interval.
†Increase in risk per increase in year of age.

Main Article