Back to today’s briefing

Story perspectives

Measles Surge in Canada: Vaccination Rates Fall Short

6/21/2025

35 7

Summary

Story summary

Measles is making a troubling comeback in Ontario and Alberta, with over 2,000 and 950 cases reported. In Toronto, only 69% of seven-year-olds are vaccinated, far short of the 95% needed for herd immunity. This outbreak, tied to a Mennonite gathering, threatens Canada’s hard-won measles elimination status.

1 of 1

Story summary

Measles is making a troubling comeback in Ontario and Alberta, with over 2,000 and 950 cases reported. In Toronto, only 69% of seven-year-olds are vaccinated, far short of the 95% needed for herd immunity. This outbreak, tied to a Mennonite gathering, threatens Canada’s hard-won measles elimination status.