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Top Pfizer scientist discusses COVID-19 vaccine's efficacy and new variants
Scientist explains how they're creating a universal Covid vaccine
Coronavirus vaccine and variants questions answered by WHO scientist – watch live
WHO’s Science in 5 on COVID-19: variants and vaccines - 8 January 2021
WHO’s Science in 5 on COVID-19: Vaccines, variants and mass gatherings - 16 April 2021
Pfizer's chief scientific officer talks COVID-19 vaccine’s 90% effectiveness
LIVE: The WHO’s chief scientist takes questions on COVID-19 vaccines, variants
COVID-19 vaccines and new variants
LIVE: The WHO discusses COVID-19 vaccine effectiveness
COVID-19 Vaccine Q&A: Temple Health Experts Discuss the Science
COVID-19 vaccines and the concern about new variants
WHO’s Science in 5 on COVID-19: Vaccines and children - 13 May 2022
