Figure 1From: Determination of clinical and demographic predictors of laboratory-confirmed influenza with subtype analysis Distribution of laboratory-confirmed influenza cases and overall influenza rate, during the 2007–2008 influenza season. NOTE. Histogram depicts all laboratory-confirmed influenza cases in the study population, by type and subtype, throughout the duration of the study, along with the percentage of subjects who were positive for any influenza type by week.Back to article page