practice. clinicians already are working with people across the u.s. to make sure that they get their boosters, including if they had moderna initially or if they had j&j, so over the next couple days, we'll clean this all up, harmonize all of these various recommendations and have a single consistent policy. >> speaking of harmonizing, the last time the fda went through this process of approving a booster for pfizer, there were resignations and disagreements and reversals. what are you expecting as they look through the steps of moderna and j&j, because the request for moderna is narrower here for specific populations to get the booster. >> correct. and it's consistent with what eventually happened with pfizer. it's because there isn't a whole lot of data suggesting that moderna loses a lot of its efficacy, and so they actually have even gone with half a dose. for j&j, my expectation is that while j&j may be approved for a second dose, the fda also will say that your second dose should