Idaho’s child immunization rates improved in 2015, reaching a five-year high. And Department of Health and Welfare officials don’t know what to make of the numbers yet. In 2015, 86.7 percent of Idaho students were considered “adequately immunized,” according to Health and Welfare spreadsheets obtained this week by Idaho Education News. The 2014 figure was 85.6 percent/Kevin Richert, Idaho Education News. More here.