and cdc to say maybe we should think about a third immunization adding to theict fayou don't know the sis is waning immunity, declining immunity or unique to the delta variant because the two things are happening at once. and finally there's a lot of data out there that's not publicly available. so i'm pretty confident all these discussions are going on between the companies and fda and cdc. so we'll see tomorrow when they announce the third immunization for immuno compromised individuals and we'll see what conditions they're looking at beyond solid organ transplant recipients, whether they'll give us a hint of what's going on with non-immuneo compromised. >> a booster for some immuno compromised is a big development. but i want you to listen to