there a difference that you're seeing for the symptoms between the omicron variant and the delta variant? we're hearing one may be less severe or different. is that true in practice? >> it seems so far that omicron is a bit milder than the prior variants that we've seen, but the caveat to that is we're seeing so many cases of omicron, even though in general it's a milder variant, there are still going to be those people who end up very sick and need to be hospitalized and need to be in the icu. so the hospitalization numbers and the death rates are still picking up, though slower than the caseloads. >> that's an important point. people should not rest on their laurels and think it's less severe, never mind. it's still very serious, still covid-19. it's still a variant at this point of course. what do you say to people who are vaccinated or even boosted. are you seeing people getting infected the same rates? is it less? what's happening on the ground? >> people vaccinated and boostered are becoming infected