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Figures
Figure 1: Epidemic curve of laboratory-confirmed cases of 2009 pandemic influenza (H1N1) virus infection in Manitoba according to final location of treatment (n = 889). The epidemic curve represents the dates of onset for confirmed cases, based on the earliest of the following dates: date of onset of symptoms, date of admission to hospital, date on which investigation form was received, date on which specimen was obtained or date on which report was received. For five additional cases, the date of onset according to this definition occurred before Apr. 2, 2009, and these cases are not represented in the figure. ICU = intensive care unit.
Figure 2: Age-specific distribution of confirmed infections by final location of care. ICU = intensive care unit.
Figure 3: Severity of disease in relation to the interval from onset of symptoms to treatment with antiviral agents. Increasing interval from onset of symptoms to antiviral therapy was associated with increased severity of illness. ICU = intensive care unit.
Figure 4: Multivariable correlates of the severity of disease, for comparison between patients cared for in the community and those admitted to an intensive care unit (ICU). CI = confidence interval, OR = odds ratio.
Figure 5: Multivariable correlates of the severity of disease, for comparison between patients admitted to hospital but not to an intensive care unit (ICU) and those admitted to an ICU. CI = confidence interval, OR = odds ratio.