either the paxlovid drug from pfizer, possibly one of the monoclonal antibodies, and it wouldn't surprise me that she's gotten both. and we don't really know what fully vaccinated means. two doses, three doses, how many months it's been since she got her booster dose. so all of those are in the mix in terms of evaluating the best therapy for her. >> the fda says it is considering whether a fourth dose of the pfizer moderna vaccines might be recommended as the country moves into the fall. do you think this step is necessary? >> yeah. it's looking like it maybe. the reason is shortly after you get that third immunization, the booster, you have about a 90% chance against hospitalization. around 66% against an e.r. visit. so still good but not as strong. the question is is it truly