Health officials have given few details about the Wisconsin measles cases. They have not disclosed ages, vaccination status or location of exposure.

Nine cases of measles were found in Oconto County, leading the Wisconsin Department of Health Services to encourage the public to get two doses of the measles, mumps, rubella vaccine, which it says is 97% effective in preventing the disease.

As Wisconsin has had its first cases of measles this year, the Jefferson County Health Department is encouraging people to take the disease seriously but not to