OLYMPIA, Wash. (AP) — Washington state lawmakers voted Tuesday to remove parents’ ability to claim a personal or philosophical exemption from vaccinating their children for measles, although medical and religious exemptions will remain.

The vote comes as the number of measles cases nationwide this year has passed 600.

The measure now heads to Gov. Jay Inslee, who has expressed support for limiting exemptions. The state has seen 74 cases of measles this year. Most of those cases were centered in one county and involved children 10 or younger who were not immunized.

626 cases of measles have been confirmed in the U.S. so far this year, up from 555 as of a week ago.

4% of Washington K-12 students have non-medical vaccine exemptions. Of those, 3.7% of the exemptions are personal, and the rest are religious.