Indiana health officials are warning any residents with plans to travel to either Michigan or Kentucky to get vaccinated for hepatitis A first due to recent outbreaks.

The Michigan Department of Health and Human Services reports that since August 2016, they have seen an increasing number of hepatitis A cases. There has not been a common source identified for the outbreak, but the agency reports that person-to-person contact and "illicit drug use" seems to be the main cause of transmission.

According to the release, there have been 815 reported cases, 657 hospitalizations and 25 deaths between Aug. 1, 2016 and April 18 of this year in Michigan.

Health officials in Indiana say that they usually see less than 20 hepatitis cases each year, but 77 have been confirmed in 2018 alone "many of which are related to an outbreak in southern Indiana."

"With popular tourist events coming up in other states, we know many Hoosiers will be traveling to areas impacted by hepatitis A, and we want them to be safe," Indiana Deputy State Health Commissioner and State Epidemiologist Pam Pontones said in the release.

"Getting vaccinated and thoroughly washing your hands before and after preparing food and eating and after using the restroom are simple, safe and effective ways to prevent the spread of hepatitis A."

In Michigan, most of the cases have been reported in southeast Michigan with the city of Detroit, and Macomb, Wayne and Oakland Counties accounting for 636 of the 815 known cases.

Hepatitis A symptoms include nausea and vomiting, belly pain, feeling tired, fever, loss of appetite, yellowing of the skin and eyes, dark urine, pale-colored faces and joint pain.