COVID-19: Study shows one shot of Pfizer or Moderna is two-thirds effective and protects well againsJune 10 2021https://vancouversun.com/health/covid-19-bccdc-study-shows-one-shot-of-pfizer-or-moderna-is-two-thirds-effective-and-protects-well-against-variants
June 10 2021https://vancouversun.com/health/covid-19-bccdc-study-shows-one-shot-of-pfizer-or-moderna-is-two-thirds-effective-and-protects-well-against-variants
