Pfizer CEO: Three Covid shots against omicron variant equivalent to two targeting original strains

Pfizer CEO Albert Bourla sits down with CNBC's Meg Tirrell to break down the company's latest data, which suggests three doses of its Covid-19 vaccine neutralizes the worrisome omicron variant. For access to live and exclusive video from CNBC subscribe to CNBC PRO:   Three doses of Pfizer and BioNTech’s vaccine provide a high level of protection against the omicron variant of the virus that causes Covid-19, the companies announced Wednesday. A booster shot of the vaccine increases antibody protection 25-fold compared with the initial two-dose series, according to a preliminary lab study. A third shot shows virus-fighting abilities comparable with the 95% protection provided by two doses against the original strain of the virus. The companies said two doses of the vaccine showed a significant reduction in the ability of antibodies to target and neutralize omicron, though they may still protect against severe disease. “Although two doses of the vaccine may still offer protection agains