Hepatitis A Virus Infection

Hepatitis A is a liver infection that is caused by the hepatitis A virus. Anyone can get hepatitis A, but children and people who live in, or travel to, countries where hepatitis A is common are more likely to get it. Once you have had hepatitis A, you cannot get sick from it again.

There are approximately 10–30 cases of hepatitis A reported in Wisconsin each year. Hepatitis A rates in the U.S. have declined by more than 95% since the hepatitis A vaccine first became available in 1995. There have been multi-state outbreaks in recent years.

To learn more about hepatitis A cases in Wisconsin view the 2023 Wisconsin Hepatitis A Virus Surveillance Annual Review, P-03599 (PDF).

For information on hepatitis B, C, D, and E, visit our Viral Hepatitis Infections page.

Graph showing Hepatitis A Cases in Wisconsin from 1988-2024
Data Source: Wisconsin Department of Health Services

About hepatitis A

Provider information

Questions about hepatitis A virus infection? Contact us!

Phone: 608-267-9003 | Fax: 608-261-4976

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Last revised February 11, 2025