An outbreak of measles in Quebec is on the rise, with confirmed cases reported in the Lanaudière region, the Laurentians, Laval, and Montreal, according to official data. Dr. Antonio D’Angelo, head of the pediatric emergency department at CHU Sainte-Justine, disclosed two recent confirmed cases at the Montreal hospital, expressing concerns about the potential for further cases. Efficient triage in hospital emergency rooms is crucial to prevent the spread of measles, as individuals with mild symptoms may inadvertently expose others to the virus. Public health officials have identified potential exposure locations, including a youth clinic in Pierrefonds-Roxboro, the emergency rooms of Sainte-Justine Hospital and Maisonneuve-Rosemont Hospital, a Walmart Supercentre in Saint-Leonard, and an Adonis grocery store in Anjou. The Quebec government website provides a detailed list of exposure locations, dates, and times for reference. The province had previously experienced a measles outbreak from December 2024 to April 19, 2025, prompting health authorities to emphasize vaccination as the most effective defense against measles.