alarming this first confirmed case of the omicron variant now in the u.s. this was discovered in california in a traveler who recently returned from south africa. we know the person was vaccinated and is now in self-quarantine with mild symptoms that are improving, that's about all we know, though. here is dr. anthony fauci at a cnn town hall last night. >> having a single person who had what would be considered a breakthrough infection because the person was fully vaccinated doesn't really tell you much at all. only a single person, anderson. you really can't make a broad general statement or extrapolation for what would go on with unvaccinated people or people who were boosted. so there is a lot still to be learned. >> dr. fauci went on to say that holiday travel is safe for those who are vaccinated. over two dozen countries on six continents have detected this omicron variant. overnight france was added to that list and moments ago india