Federal COVID-19 vaccine contracts mean Canada should get enough doses to give two or three more mRNA shots to every Canadian, every year, until at least 2024.
But even as the National Advisory Committee on Immunization is now suggesting some Canadians get in line for their fourth doses, the World Health Organization is warning that "repeated booster doses of the original vaccine composition" are not a sustainable plan to end the pandemic.
The WHO's vaccine technical committee said today vaccines need to become more effective at keeping up with emerging variants.
Prime Minister Justin Trudeau said Monday there will be third and fourth booster doses available in this country if or when they're needed.