because the cases are increasing in south africa. you are seeing clusters of cases where tons of people have become infected from a primary index person who has omicron. i would say, for the booster part, we are still waiting on that laboratory data. but the reason you see myself and many other infectious disease doctor's an immunologist say with more confidence that we are probably going to be protected against infection for severe diseases because no other variant today brian, has reduced complete, or completely reduced eradicated protection against severe disease. and that is why those vaccines are so important and the boosters from what we know now, these boosters are increasing, the antibodies. but more and more studies are coming out that they are giving you a more immune response that might be helpful particularly to a new threat from the variant. we won't know until those laboratory data come out from vaccination studies in the next week or so. >> you and i discussed just days ago when you were last on,