JOHNSON COUNTY, Iowa [KCCI-TV]  — Three more people have been diagnosed with measles in eastern Iowa, Johnson County health officials say. The three new cases are household contacts with the initial measles case, an unvaccinated child who was exposed during international travel, identified in Johnson County last week. The new cases include two unvaccinated children and one unvaccinated adult.

Johnson County Public Health officials say they are continuing to monitor individuals who were exposed after the initial case. There have now been six cases of measles identified in Iowa this year. In May, officials identified the first case of the disease in Iowa since 2019. Currently, there is a multistate measles outbreak across the United States. As of June 12, there have been nearly 1,200 confirmed cases of measles in the U.S. this year.

The Iowa Department of Health and Human Services says the vaccine is 97% effective against measles, but only 84% of 2-year-olds in Iowa are vaccinated — well below the 95% needed to prevent outbreaks.

Officials say anyone who has been exposed to a measles case and has symptoms should contact their medical provider or go to an emergency room, but tell them you have been exposed to measles ahead of arriving.