Getting a grippe on severity: a retrospective comparison of influenza-related hospitalizations and deaths captured in reportable disease and administrative data sources in Ontario, Canada

Table 1 Total number of laboratory-confirmed influenza cases, hospitalizations and deaths captured in reportable disease and hospital data, Ontario, 2010–11 to 2013–14 influenza seasons

For reportable disease data, hospitalizations and deaths are counted using the episode date (the first of onset date, laboratory specimen collection date, or date reported to public health)
For hospital data, hospitalizations and deaths are counted using the admission date (as an indicator for date of symptom onset)

ISSN: 1471-2458