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Pfizer CEO: Three Covid shots against omicron variant equivalent to two targeting original strains
Pfizer: Booster dose of Covid vaccine neutralizes omicron variant
Biden Hails Pfizer Study That Shows Booster May Protect Against Omicron
COVID-19: Pfizer booster dose neutralizes Omicron variant, BioNTech CEO says
Pfizer says booster shots are needed to better protect against Omicron variant
Pfizer Vaccine Provides Less Immunity to Omicron Variant
Pfizer CEO: New Data On Booster Effectiveness Against Omicron Is ‘Very Good News’
Pfizer: Protection against Omicron improves after 3 doses
Pfizer says 3rd shot of COVID vaccine more effective at neutralizing Omicron variant
Definition of fully-vaccinated likely to include booster
Pfizer CEO says fourth COVID vaccine dose may be needed
BioNTech, Pfizer say their Covid-19 vaccine neutralises Omicron with three shots
