50 who have gotten that second shot. there could be another round of boosters come this fall, but we don t know which age group yet that will target. but here s this. officials are hoping that basically this second round of boosters could be a new and improved type of shot, one that would last longer and could work against future variants. david, as for the vice president, we re told that president biden called her today to check in and again, at this hour, she is asimymptasymptomat. cecilia vega, thank you. we re going to turn now to the war in ukraine. tonight, the u.s. reacting after russia s foreign minister 24 hours ago warned of the dangers of a nuclear conflict. tonight, u.s. defense secretary lloyd austin with strong words in response, as he rallied allies in a meeting in germany. more than 40 countries plank new aid to ukraine, including germany, now sending heavy weapons for the first time. secretary austin today warning that in nuclear conflict, all sides lose. and tonig