Back to today’s briefing

Story perspectives

Measles Outbreak Soars: 173 New Cases in Ontario

5/23/2025

38 5

Summary

Story summary

Measles cases in Ontario have skyrocketed, with 173 new infections last week alone, bringing the total to 1,795 since October 2024. Unvaccinated infants, children, and adolescents are bearing the brunt of this outbreak, particularly in Oxford County, which reported 98 new cases. Alberta is also grappling with over 500 cases since March, underscoring the urgent need for vaccination to combat this alarming trend.

1 of 1

Story summary

Measles cases in Ontario have skyrocketed, with 173 new infections last week alone, bringing the total to 1,795 since October 2024. Unvaccinated infants, children, and adolescents are bearing the brunt of this outbreak, particularly in Oxford County, which reported 98 new cases. Alberta is also grappling with over 500 cases since March, underscoring the urgent need for vaccination to combat this alarming trend.