Measles Outbreak: 6 Confirmed Cases in Quebec Including at Least One in Greater Montreal
Quebec is currently facing a measles outbreak with six confirmed cases, including at least one in Greater Montreal. The number of cases has increased recently from three to six.
Details of the Measles Outbreak
The latest case, reported by a regional public health authority on December 17, 2025, involves a resident of Montreal. Other regions affected include Lanaudière, the Laurentians, and Laval.
Locations and Public Exposure
Locations frequented by infected individuals in Montreal and surrounding areas include:
- Up Centre de services aux urgences pédiatriques, Saint-Eustache (visited on November 28)
- Clinique de Santé Jeunesse, Boulevard Pierrefonds, Montreal
- Walmart, Boulevard Langelier, Saint-Léonard
- Marché Adonis, Boulevard des Roseraies, Anjou
- Hôpital Maisonneuve-Rosemont, emergency department
People who visited these locations, especially non-immunized individuals, should monitor for symptoms until December 19.
Background and Statistics
This outbreak follows a previous one that occurred between December 2024 and April 2025. Including both outbreaks, close to 40 measles cases have been reported in Quebec since the beginning of the year, according to the Government of Canada.
Risk and Recommendations
The provincial government indicates that those protected against measles face minimal risk if exposed. However, the public is urged to watch for the following symptoms:
- Fever
- Runny nose and nasal congestion
- Cough
- Conjunctivitis
- Light sensitivity
- General malaise
Who is Considered Unprotected?
The following individuals are at higher risk:
- Born before 1970
- Have serology showing antibodies against measles
- Have medical documentation confirming a previous measles infection before January 1, 1996
- Have written proof of measles vaccination
Non-protected individuals exposed to measles are advised to isolate at home from the fifth day after initial exposure until the 14th day inclusive after the last exposure. Vaccination and symptom monitoring are strongly recommended.
