US Edition
Ontario Changes Measles Vaccine Eligibility for Children Amid Growing Outbreak
- Ontario's health officials changed measles vaccine eligibility for children on March 4, 2025, amid a provincial outbreak affecting many unvaccinated youth.
- The change followed over 1,600 measles cases since October 2024, with outbreaks concentrated among unvaccinated children, infants, and teens across Ontario and Alberta.
- Summer camps in Ontario now require proof of vaccination for children and staff, with unvaccinated individuals subject to 21-day isolation following measles exposure.
- Public Health Ontario reported 182 new cases last week, 119 hospitalizations, nine intensive care cases, and stated that 95% of hospitalized patients were unvaccinated.
- The expanded vaccine eligibility aims to limit transmission during summer camps and public exposures, suggesting ongoing efforts to control the persistent, highly contagious outbreak.
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Ottawa CitizenReposted by 
Kingston Whig-Standard
Kingston Whig-StandardOntario measles outbreak at more than 1,600 cases
Earlier this month, Ottawa Public Health reported two cases of measles, the city’s first since 2019.
·Ottawa, Canada
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Total News Sources23
Leaning Left4Leaning Right2Center5Last UpdatedBias Distribution45% Center
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45% Center
L 36%
C 45%
R 18%
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