kristin englund, and joe is on the phone from san antonio, texas. good morning. >> yes, doctor englund. i was wondering, do you know anything about the novavax vaccine? when it will be approved, or if it will be approved? and how is this vaccine the same or different from the other vaccines? >> oh! so the novavax, i don't believe is something that is being manufactured here in the united states. and i do not know when that is going to be available. i have not seen anything of far as when it's going to be put in front of the fda, and i'm afraid i don't know where it is in the trial status. on sorry, joe, i don't know the information about novavax. >> hector from boston, massachusetts. good morning. >> good morning, sir. this question is for dr. kristin. if you have had a what they called plasma transfusion in the past, can you still get the covid vaccine without any conflict complications? >> yes, you can. so if you've had a convalescent plasma -- so that is one of the treatments that we were using for folks who had covid. so trying to get the antibod