testing positive or quarantining after exposure. they re really a window into community spread. and kudos to the sports leagues because they are actually doing a fantastic job of surveillance testing. and the rest of the country, we re driving a car down a dark road with the headlights off while looking in the rearview mirror. reporter: this afternoon we have 15 yeses, zero nos. interpreter:. reporter: cdc vaccine advisers unanimous in recommending to change its guidance to say that the pfizer and moderna vaccines are preferred over the j&j. why? well, those very rare blood clots connected to the j&j that can be fatal. so anderson, what s changed since the johnson & johnson vaccine was authorized, recommended earlier in this year? well, it turns out that those very rare clots aren t quite as rare as estimated. i mean, we re still talking fewer than one in a million people who get the johnson &
since the johnson & johnson vaccine was authorized, recommended earlier in this year? well, it turns out that those very rare clots aren t quite as rare as estimated. i mean, we re still talking fewer than one in a million people who get the johnson & johnson get the clot and die from it. also there have been studies that show the johnson & johnson vaccine is not as effective as the moderna or the pfizer. and also earlier in the year remember there was a fear that there would be a shortage of vaccines. that fear no longer exists. we have enough vaccines. we just don t have enough people to put them into. so now with a glut of vaccines we can be a bit more choosy. and one of the advisers who is also a doctor said during the meeting today at this point i can t recommend the vaccine, the johnson & johnson, that i know can lead to a condition that can lead to a death. so he says he s telling his patients just to steer clear of johnson & johnson. the johnson & johnson vaccine is