pfizer or moderna vaccine can get a third shot eight months later but. government says that shots will be available september 20th. cdc shows that -- was declining effectiveness push them to make this move. although the fda has had to sign off on. it means meanwhile, an israeli study shows that pfizer's booster can improve immunity in people 60 and older. federal officials say they are also reviewing data on visitors from people who have received that one and done johnson and johnson vaccine. >> right now, the fda is now looking at the j&j, the approval, the eua, and how that would fit. and we are not forgetting at all about the people with j&j. president biden also escalated his confrontation with republican governors over school mask mandates. he was direct about it. president said he has directed