Ontario reports almost 200 new measles cases as virus spreads across Canada

TORONTO — Health officials say measles infected 197 more people in Ontario over the last week as the highly contagious disease emerged in new parts of the country.

That brings the province’s tally of probable and confirmed cases to 1,440 since the outbreak began in October.

In Saskatchewan, the health authority has confirmed two cases in late April and early May in Rosthern and Preeceville.

The SHA has asked anyone who was at the Shop Easy Foods on Main Street N. on Tuesday, April 29, from 2-4:30 p.m. to monitor for measles symptoms.

The warning is for those who were at the Emergency Department at the Rosthern Hospital at 2016 2nd Street on the following days and times:

Friday, May 2, 2025, from 9:00 a.m. to 3:00 p.m.
Friday, May 2, 202,5, from 7:25 p.m. to Saturday, May 3, 2025, at 3:40 a.m.

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Public Health Ontario’s measles report says there have been 101 hospitalizations, including 75 children. Eight patients have been in intensive care.

Nova Scotia and Northwest Territories each reported measles cases earlier this week, marking their first since this outbreak began.

Alberta reported yesterday that its overall case count had reached nearly 300 since mid-March, including three patients under the age of 18 in intensive care.

Saskatchewan updated its cumulative count to 27 cases today, a day after Manitoba reported it had reached 24 cases.

Measles has mostly infected unvaccinated children, infants and teenagers, with almost 500 cases in Ontario’s southwestern public health unit.

This report by The Canadian Press was first published May 8, 2025

Canadian Press health coverage receives support through a partnership with the Canadian Medical Association. CP is solely responsible for this content.

Hannah Alberga, The Canadian Press

– With files from 650 CKOM