Influenza: Wisconsin Data
Weekly influenza case counts are organized by flu season.
The weekly respiratory report retired on May 23, 2025. All information from the weekly respiratory report is found on the Respiratory Virus Data webpage.
View past reports by choosing a season or see the table listing all reports.
- 2024-25 flu season began reporting on October 5, 2024
- 2023-24 flu season began reporting on October 21,2023
- 2022-23 flu season began reporting October 1, 2023
- 2021-22 flu season began reporting July 3, 2021
- 2020-21 flu season began reporting October 17, 2020
- 2019-20 flu season began reporting October 5, 2019
- 2018-19 flu season began reporting October 13, 2018
For additional influenza data in Wisconsin, visit our webpages for respiratory virus data or influenza vaccine data.
For national data, visit the Centers for Disease Control and Prevention Flu Activity and Surveillance page.
Questions about influenza? Contact us!
Phone: 608-267-9003 | Fax: 608-261-4976
Weekly Respiratory Virus Data
Sign up to receive weekly respiratory virus data updates.
| Assigned Number | Title | Language | Release Date Sort ascending | File Format | Available to Order |
|---|---|---|---|---|---|
| No results found. Please try again. | |||||