Influenza (Flu)

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The flu is an illness caused by the influenza viruses. Flu gets passed around every year, with some years being worse than others.

Flu vaccine: Your best bet for avoiding the flu

Getting a flu shot is an easy way to help protect you and your family.

Now more than ever, getting your flu vaccine is one of the most important and proactive steps you can take to protect not only yourself and the people you love, but also your community as a whole. By getting vaccinated, we can help keep ourselves, our families and our communities safe. Learn more about where to get a flu vaccine on our Flu Prevention page.

Flu in Wisconsin: During the 2019-20 flu season, there were: 36,175 cases, 4,425 Hospitalizations, 183 deaths from the flu.

During the 2019-2020 flu season in Wisconsin, the flu caused 73 hospitalizations among pregnant people and 14 hospitalizations among post-partum people—the highest number since DHS started monitoring this information. For weekly case count updates, please see the Weekly Respiratory Virus Surveillance Report.

This page has more general information on the flu, including information on signs and symptoms and resources.

This page has tips on ways to prevent the flu.


This page has information on influenza data and the Weekly Respiratory Report.

This page is for local health departments, health care providers, or those looking for information on reporting, surveillance, or diagnosis of the flu.


This page is for local health departments, health care providers, or those looking for resources for the flu education, outreach, vaccination logistics and quality improvement.

Questions about the flu? Talk to your doctor.
Or find answers to frequently asked questions and learn more about the flu with the Centers for Disease Control.

Last Revised: May 12, 2021