Do I need a third dose of the measles vaccine? And other common questions answered [Video]

It’s only April, and 2025 is already shaping up to be the worst year for measles since the disease was declared eliminated in 1998 in Canada.

Ontario continues to be the epicentre of the spread. Public Health Ontario is reporting 1,018 confirmed and probable cases of measles so far this year. The vast majority of those infected were not fully immunized. Six unvaccinated children and adolescents have been hospitalized with the virus.

In Alberta, too, the virus is spreading. The province is reporting 129 cases as of April 24, in every zone in the province. In that province, most of those sick are not fully vaccinated. Nine people have been hospitalized. 

Measles is one of the most contagious diseases known to humankind. Symptoms can include a fever, coughing and a runny nose, as well as a blotchy red rash. In serious cases, measles can cause complications like inflammation of the …