The CDC, which is investigating the outbreak along with the Florida Department of Health, is also looking into a separate serogroup B meningococcal outbreak among college students in Leon County, Fla.

The Florida health department first issued an alert about the Leon County outbreak in April.

The CDC is encouraging gay and bisexual men in Florida to get the meningococcal vaccine (or MenACWY), which is free of charge through county resources in Florida.

“Because of the outbreak in Florida, and the number of Pride events being held across the state in coming weeks, it’s important that gay and bisexual men who live in Florida get vaccinated,” Romero said in a statement.