much. and let s bring in former health commissioner dr. leana wen. let s start with what we ve learned from omicron. the surge is della but omicron is spreading here. we heard this morning from the zrr who said they re on the back end of their slope. that is a steep mountain but a very narrow one. what should we glean from what we re seeing in south africa? well, i would love for the u.s. to also have the experience of south africans, of the province where johannesberg and they were reporting from, it would be great to see a rapid spike by a rapid downward trajectory, but we don t know whether the experience from south africa would apply here. the population is younger than here in the u.s. also, it is expected that a lot more people in south africa were exposed during earlier waves and we have deep pockets within the u.s. of lots of unvaccinated