time when we are looking at vaccine booster timetables for everyone. what is your reaction to this? >> yeah, good morning. thanks for having me here. i'm a little perplexed by that piece. there's some terrific scientists on there, so i want to be thoughtful about how we talk about it. but the bottom line is that as i look at the data, data out of israel, data out of the united states as well, is you clearly do see waning immunity in high-risk people. as i think about who needs boosters, elderly, frail, people with chronic diseases, the evidence is leaning towards that. both of the companies, moderna and pfizer have submitted more data to the fda. that will become available in the next week or so. i think the high risk individuals we almost surely need a booster. >> i want to ask you about an argument, you're hearing from republican politicians, jim jordan yesterday, and other people in surprising locations. say, look, if you're vaccinated,