News & Events: Details

Hepatitis A Outbreak


Arizona, along with many other states, is currently experiencing a statewide outbreak of hepatitis A affecting 7 counties.

There have been over 300 cases, primarily among at-risk individuals, including illicit drug users, homeless or mobile individuals, and those who have been recently incarcerated. A striking 80% of cases have been hospitalized.


The most effective way to curb this outbreak now and prevent future outbreaks is to vaccinate individuals who are at highest risk. Those groups include:

  • Individuals experiencing homelessness or unstable housing;
  • Individuals who use drugs;
  • Individuals who have been recently incarcerated.

These vaccines can be entered into ASIIS (Arizona State Immunization Information System) to help providers and public health track when someone has already received a vaccine or if they still need to be vaccinated.


Please see the ADHS website to find out more about how to enroll into ASIIS if you do not have access:


For additional information on hepatitis A in Arizona, please visit