FF: Groundbreaking developments from Pfizer could speed up vaccine rollout ((foxandfriends_____)) ((lubuntu at wor2 1TXN))

="//video.foxnews.com/v/6234213773001">Groundbreaking developments from Pfizer could speed up vaccine rollout

FOX News medical contributor Dr. Janette Nesheiwat weighs in on 'Fox & Friends Weekend'