School nurse Jennifer Comer vividly remembers the number of students she had to exclude from Clark Middle School in Bonner Springs on a single day in 2013: 289.

As the U.S. records its highest number of measles cases in decades, one Wyandotte County district draws comfort from its high vaccination rate. Another is working to catch up.

A record share of U.S. kindergartners had an exemption for a required vaccination last school year, and coverage for all ...

Vaccine exemptions for one or more vaccines have also gone up, with a total of 138,000 kindergarteners exempt from a vaccine in the last school year. The number of exemptions rose to 3.6 percent ...