Respiratory Illness Dashboard

Key Takeaways for the Week of May 21, 2026

• COVID-19, flu, and RSV activity are very low based on emergency department data.
• We're continuing to watch rhinovirus and enterovirus activity, which cause the common cold. The percent of positive lab tests has continued to rise in recent weeks, and the percent of air samples testing positive for rhinovirus and enterovirus in Dane County schools is also increasing.

Dashboard Update Schedule

This dashboard is updated on Thursdays at 12:30 pm. If the dashboard is not updated then, we may be experiencing technical issues; check back at 4:30 pm. If we experience a delay in receiving data from one of our data sources, that data element will be updated the following week. 

About These Data

Learn more about these data by reading our data notes

How to Prevent Illness

• Protect yourself from COVID-19, Flu, and RSV
• Get vaccinated  

Other Data

• Wisconsin Department of Health Services
  • Wastewater Data: Summary, COVID-19, Flu & RSV
  • Vaccination Data: COVID-19, Flu, RSV
  • Respiratory Illness Data
  • Emergency Department Visit Data for COVID-19, Influenza, and RSV
  • Laboratory-Based Respiratory Virus Data
• National COVID data
• National Flu data
• Wisconsin State Lab of Hygiene

Wastewater Data

This dashboard from the Wisconsin Department of Health Services shows the levels of COVID in wastewater across the state. To see the most up-to-date data for Madison, click on "Madison" in the left column. 

Flu Vaccines

COVID-19 Vaccines

Archive of previous COVID-19 dashboard (no longer updated)