Pfizer and Moderna say COVID-19 vaccine protection wanes after six to eight monthsSeptember 15 2021https://vancouversun.com/health/pfizer-and-moderna-say-covid-19-vaccine-protection-wanes-after-six-to-eight-months/wcm/0b561e50-4433-4f5f-a01c-a7d80d0fb5f8
September 15 2021https://vancouversun.com/health/pfizer-and-moderna-say-covid-19-vaccine-protection-wanes-after-six-to-eight-months/wcm/0b561e50-4433-4f5f-a01c-a7d80d0fb5f8
