The Durham Region Health Department confirmed two new cases of measles in unimmunized children on March 8, 2026, bringing the total number of cases in the region to three. This announcement is important for residents in Ajax, Ontario, as health officials work to track potential exposures and prevent the virus from spreading further.
Public health staff found that a possible exposure happened at the Ritson North Medical Centre (Urgent Care) in Oshawa. People who were at that clinic on March 4, 2026, from 3 p.m. to 5:15 p.m. are asked to watch for signs of illness.
Measles symptoms typically appear between seven and 21 days after a person is exposed and often include a high fever, cough, and runny nose. Other common signs to look for are red or watery eyes and a distinct red rash that develops on the body.
Residents should check their medical records to ensure they have received both doses of the measles vaccine. If you think you have been exposed, you should contact a healthcare provider or the Durham Region Health Department, but you must call before arriving at any medical office to help protect other patients.
All three confirmed cases involve children from the same household who had not been vaccinated against the virus. Public health officials are currently performing contact tracing to identify anyone else who might be at risk.
