- Pfizer and BioNTech Provide Update on Omicron VariantPfizer
- Two vaccine doses may not provide sufficient protection against Omicron coronavirus variant, but protection improves with three doses, Pfizer saysCNN
- Pfizer Says Two Doses Might Not Fight Omicron but Three WillThe Daily Beast
- Omicron Infections Now Identified In Over A Third Of The U.S.NBC News
- What to watch today: Wall Street set for another rally as Pfizer booster shows promise on omicronCNBC