>> i do. i do. and antigen tests are quite good at picking up people who are contagious. that's what we want. i would love to see some sort of test on arrival for antigen. i know that's going to be logistically hard. there are other ways we can do this. antijen tests are really quite good and they give you quick results. there's some real advantages to that. >> moderna's ceo told cnn yesterday they'll have answers about whether its vaccine works against the omicron variant. they'll have those data over the next 7 to 10 days. until that happens, what should people with the moderna vaccine or other vaccines be doing? >> so i think we'll have more data from moderna, pfizer and j&j in that 7 to 10 days. we'll have laboratory evidence, which is not definitive but very, very helpful. at this point my expectation is we're going to see a hit to vaccine efficacy but not a complete wiping out of vaccine efficacy. and what i expect is all the vaccines. if you are fully boosted, it's going to give you a good degree