Moderna says COVID-19 vaccine protection wanes, makes case for boosterSeptember 16 2021https://www.ctvnews.ca/health/coronavirus/moderna-says-covid-19-vaccine-protection-wanes-makes-case-for-booster-1.5588050
September 16 2021https://www.ctvnews.ca/health/coronavirus/moderna-says-covid-19-vaccine-protection-wanes-makes-case-for-booster-1.5588050
