Health officials in Ashtabula County, Ohio, have confirmed measles in two adults, according to local reporting from Jefferson. The cases were first announced earlier this week by the Ashtabula County Health Department.

The department said the two adults may have exposed other people to measles at three locations in the county. While the trimmed report does not list all of those places, the public notice indicates officials are trying to quickly identify where contact may have happened and warn anyone who could be at risk.

In response, the main focus appears to be limiting further transmission. That includes confirming the cases, tracking possible exposure sites, and sharing information with the public so people who were in those areas can watch for symptoms and take appropriate precautions.

The Ashtabula County measles cases add to wider concern about how quickly the highly contagious virus can spread after public exposure. Local health authorities are continuing their response as they work to prevent additional infections in the community.