who have had johnson & johnson, studies have shown that vaccine has held up against preventing severe disease. that's what it's supposed to do. >> so we're hearing once again from the white house and the administration not to mention medical leaders around the country about the benefits of antibody treatment. this is treatment. it's not prevention. vaccine is a prevention. this is treatment. what are the known benefits? and how available is this type of treatment? >> you know, john, this is a frequent question i get in community. i actually got it last night in newark, new jersey. you had symptoms for ten days or less and at risk for severe disease, you should get an antibody. a lot of the public still doesn't know what that is. we want to make sure providers have that on their radar. if you're 65 and older and have chronic conditions whether that's cardiovascular disease, high blood pressure, obesity,