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The Montreal Children’s Hospital is warning of a measles exposure in its emergency room.
According to the hospital, people who were in the pediatric emergency department (Glen B Block, Level S1) on Jan. 1 between 12:18 p.m. and 11:01 p.m. may have been exposed to the virus.
In December 2025, public health officials recorded Quebec’s first measles outbreak in months, with cases identified at locations in Montreal.
“Measles is a highly contagious viral infection that spreads through the air. Possible symptoms include fever, cough, runny nose, conjunctivitis and a widespread rash,” the hospital said in a warning published on Tuesday.
Anyone exposed could develop measles during the incubation period, between Jan. 6 and Jan. 22.
People who are not immune, whose immune status is uncertain or who are immunocompromised are asked to contact their health-care provider or call Info-Santé, 811.
The hospital says a person is considered immune to measles if they have received two doses of the measles vaccine or if they were born in 1970 or later.
The hospital also advises that anyone exposed should avoid contact with people at higher risk, including infants under one year, pregnant people and people with weakened immune systems.