Ontario reports 'small decline' in measles, 89 new cases

Ontario's measles outbreak grows to 661 cases

Ontario’s historic measles outbreak is continuing to grow, with 89 cases reported in the past week, bringing the total since last fall to 661, according to the latest data from Public Health Ontario.

’Small decline’ in Ontario measles outbreak with 89 new cases reported

Ontario is reporting 89 new measles cases over the last week, bringing the province's case count to 661 since an outbreak began in the fall.

Public health officials point to recent measles cases in Ontario to underscore the case for an electronic vaccination registry

According to new data released by Public Health Ontario, the province recorded a total of 661 measles cases between Oct. 18 of last year and April 2, 2025

Ontario reports 'small decline' in measles, 89 new cases

Measles cases still predominantly involve unvaccinated children in Ontario’s southwestern public health unit, which accounts for almost 45 per cent of the province’s cases.

Ontario reports 89 new measles cases over a week

Ontario is reporting 89 new measles cases over the last week, bringing the province’s case count to 661 since an outbreak began in the fall.

Measles outbreak: More cases in London area; a glimmer of hope

A health unit near London at the epicentre of a provincewide measles outbreak continues to see an increase in cases of the highly infectious disease. Here is the latest on the outbreak that has spread throughout Southwestern Ontario, including Middlesex-London.