TORONTO — Most new measles cases in Ontario over the past week were reported in a popular summer travel area.
Public Health Ontario is reporting 32 new measles cases, 19 of which are in Huron Perth.
The public health unit located west of Kitchener includes Stratford, known for its annual theatre festival, as well as Lake Huron beach spots including Clinton and Goderich.
That brings Ontario’s total case count to 2,276 since an outbreak began last fall.
Dr. Miriam Klassen, medical officer of health for Huron Perth Public Health, said the “noticeable jump” this week was driven by an exposure at a private function and a large household with multiple cases.
“This doesn't represent a widespread increase across Huron Perth, but more so a cluster,” Klassen said.
“For people that want to take advantage of all these wonderful summer activities and festivals all across southwestern Ontario, the best advice is to update your own vaccination status.”
Public health experts have encouraged cautious optimism on Ontario's slowing case counts given the ebb and flow of the highly contagious infectious disease.
Alberta is also battling an outbreak, reaching 1,376 total cases since the outbreak there began in March. It surpassed the United States’ case count earlier this week.
Also this week, New Brunswick declared a measles outbreak and has reported five confirmed cases in the south-central region of the province.
Provincial health officials are reporting 114 cases in British Columbia, 146 in Manitoba, and 60 in Saskatchewan.
This report by The Canadian Press was first published July 17, 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
