Pfizer CEO says fourth COVID-19 shot 'necessary' due to waning immunity - New York Post
- Pfizer CEO says fourth COVID-19 shot 'necessary' due to waning immunity New York Post
- A 4th dose of Covid-19 vaccine will be needed, Pfizer's CEO says, but the company is working on a shot to handle all variants CNN
- Pfizer CEO says a fourth booster shot 'is necessary' | TheHill The Hill
- Opinion | Uncertainty hangs over a fourth vaccine dose. That invites another pandemic surprise. The Washington Post
- Pfizer CEO Says Fourth COVID-19 Vaccine Dose 'Is Necessary' HuffPost
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