Health officials said the pause is being made “out of an abundance of caution.”
Reports released by the FDA showed Johnson & Johnson’s vaccine was 86% effective at preventing severe cases of COVID-19 and 100% effective at preventing death in the United States.
The first one-shot COVID-19 vaccine provides good protection against the illness, Johnson & Johnson reported in a key study.
If effective, Johnson & Johnson's one-dose vaccine could quickly help large swaths of the United States develop immunity to COVID-19. That would be a game changer.