Quebec's public health authorities are grappling with a growing measles outbreak, with an eighth case now confirmed in the province. The situation underscores a concerning national trend, as Canada has recorded 5,329 measles cases across all provinces and the Northwest Territories as of December 15, 2025.
Outbreak Details and Affected Regions
The Quebec Health Ministry reported the eight confirmed cases on December 19. The outbreak is no longer confined to a single area, having spread to multiple regions. Public health officials have identified exposures in Lanaudière, Laurentides, Laval, and Montreal.
This recent cluster began earlier in December, marking a resurgence after the first case since April was reported in the Laurentians on December 3. The outbreak has been active throughout the month, prompting increased surveillance and public warnings.
Public Exposure Warnings Issued
Health authorities have issued specific alerts for potential public exposures. One infected individual visited the emergency room at CHU Sainte-Justine on December 14 between 6:09 p.m. and 7:35 p.m.
On the same date, another person with measles was at the UP Centre d’urgences pédiatriques in St-Eustache between noon and 8 p.m. The Quebec Health Ministry has listed these locations on its measles tracker website, stating that anyone present during those times is considered a contact of a confirmed case.
"People who were in the following places during the dates and times specified are considered contacts of a confirmed case of measles. They must isolate themselves if they are not protected against measles," the ministry's advisory states.
National Context and Preventive Measures
The Quebec cases contribute to a significant national total. According to the federal government's measles and rubella weekly monitoring report, the 5,329 cases recorded across Canada by mid-December represent a substantial public health challenge.
In response to the spreading outbreak, health authorities are emphasizing prevention. Vaccination remains the most effective tool to limit transmission. The measles virus is highly contagious, and public health officials stress that preventive treatment, including timely vaccination, is crucial for containing the disease's spread and protecting vulnerable populations.
The situation continues to evolve, with health departments across Quebec and Canada monitoring closely and urging the public to verify their vaccination status.
