Replicating and that big host inflammatory response, so you have to give it very early on. >> in today's white house briefing, dr. offit, dr. fauci brought up a study from skrld that reflects the data come in from south africa that omicron is less severe than delta. it is too early to say if that is the case here in the united states, but will you be looking to see if that is sctrue here a well. that is important. >> if you look at the south africa data, when you saw the beta variant come into south africa, dramatic increase in cases and hospitalizations and deaths came down. then the delta va...