Quebec measles outbreak grows to 27 cases, mostly in Quebec City area

Quebec's measles outbreak has climbed to 27 confirmed cases, with most infections concentrated in the Quebec City region. Health officials reported the latest case on June 28. Ten cases were identified last week in the Portneuf regional county municipality, located west of the provincial capital.

Exposure sites have been identified at the emergency room of the St-Raymond hospital, as well as at grocery stores and pharmacies in Pont-Rouge and Donnacona. Since early June, other cases have surfaced in Montreal, Laval, and the Montérégie, Laurentians, and Lanaudière regions.

Quebec has experienced three other measles outbreaks since 2024. The most recent one concluded in February 2026, having started in November 2025. Measles is an extremely contagious airborne disease. Symptoms typically appear 10 to 14 days after exposure and include high fever, cough, runny nose, and red eyes, followed by a characteristic rash. Complications can range from ear infections and pneumonia to permanent brain damage and death, particularly affecting infants under one year old, immunocompromised individuals, and unvaccinated pregnant women.