>> every death is so tragic. so many hundreds of thousands of death owes kurred after the vaccines became widely available. >> reporter: health officials are hoping full fda approval and cdc recommendation could help motivate the roughly 20% of eligible un-vax nate americans to finally get their shot. cdc's rochelle welinski signed off recommending the covid vaccine for adults. prior to friday's vote, the vaccine was only recommended by the cdc on an interim basis. >> i still have a sense of wonder on what's been accomplished here, that and a deep sense of gratitude. you know, we now have two vaccines against covid-19 that are fully licensed the u.s. >> reporter: the cdc released fresh data on the covid