Alva Review-Courier -

COLUMBUS, Ohio (AP) — States are heatedly debating whether to make it more difficult for students to avoid vaccinations for religious or philosophical reasons amid the worst measles outbreak in decades, but schoolchildren using such waivers are outnumbered in many states by those who give no excuse at all for lacking their shots.

A majority of unvaccinated or undervaccinated kindergartners in at least 10 states were allowed to enroll provisionally for the last school year, without any formal exemption, according to data reported to the Centers for Disease Control and Prevention. Only 27 states...