Circulation of respiratory viruses is normally highest in the fall and winter. For the purposes of reporting and comparisons over time and between viruses, the respiratory season typically runs from late August of the current year to late August of the following year. The current season, 2023-2024, starts on August 27, 2023 and ends on August 24, 2024. Additional information on respiratory season, and a full calendar for the current season, can be found on the Data Notes page.
Respiratory virus data included in the interactive data application is up-to-date as November 25, 2023. Among its new features, the dashboard now includes RSV cases and positivity, with plans to collect Severe Outcomes data in the near future.
Summary
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