Some popular gay bars in Detroit, Ferndale and Pontiac will have on-site hepatitis A vaccination clinics this month.
It's the state's latest effort to slow the hep A outbreak in Southeast Michigan.
About 14% of the 727 cases identified so far are men who have sex with men -- hence the clinics.
Many hep A cases are also occurring among drug users, jail inmates, restaurant workers, people with no permanent home, and people who live with an infected person. 590 people have been hospitalized, and 24 people have died from infections from the virus.