 Summer break is entering the home stretch, and eastern Iowa health officials are encouraging parents to make sure their kids are up to date on their immunizations before going back to school. In Iowa, students can file for religious exemptions from vaccines. Last year, more than 93 percent of students provided immunization certificates, but that's slightly lower than the previous year. Heather Meter with the Linn County Public Health Department says more people are opting out of the vaccinations, and that's a step in the wrong direction and could put children's health at risk.