1.6K Ontario Students Suspended for Outdated Vaccination Records Amid Measles Outbreak

A dose of the measles, mumps, and rubella (MMR) vaccination awaits the next patient during a vaccine clinic at Southwestern Public Health in St. Thomas, Ont., on March 4, 2025. THE CANADIAN PRESS/ Geoff Robins

An Ontario public health unit has issued a directive to suspend 1,624 elementary students due to outdated vaccination records as the province continues to grapple with a measles outbreak.

The notice was issued April 2 by the Region of Waterloo Public Health, in accordance with the Immunization of School Pupils Act.