What you should know about bivalent COVID-19 boosters, including the difference between Moderna and Pfizer

Canadians are being urged by the country's federal, provincial and territorial governments to get one of two approved bivalent COVID-19 vaccines as soon as they're eligible. Because vaccine-conferred immunity wanes over time, boosters are important for keeping the population protected against COVID-19, health officials say, especially as the cooler weather threatens to bring another surge of cases. The new shots – one by Moderna and one by Pfizer – were approved by Health Canada on S