everyone who has had a full course will get an additional shot. >> for people who initially got the j&j vaccine, there is a new study from the national institutes for health showing that a booster for pfizer or moderna seem to provide a stronger antibody response. what should j&j recipients do if they want a booster? get a j&j booster if it's approved or try to get a pfizer or moderna booster? >> i think the first thing to say is they should ask their doctor what's right for them. and we'll see what the panel recommendation is tomorrow. it's very tempting to allow the j&j folks and mrna vaccine because the antibody boost was dramatically higher than following a second j&j dose. so we await their decision tomorrow. >> all right, thank you so much. could the supreme court expand? could it increase the number of justices? a commission set up by president biden just dropped its first