omicron as well as whether we see a similar trend in other countries where omicron is taking on. and i say that partly with caution because we're also as you said, going into a winter surge with delta, and you know, when you get infected now, you don't know if it's omicron or delta, but the chances are very high it's delta, and we already know delta is causing a lot of destruction so vaccination and those measures are important. >> we think that omicron may be more transmissible. we are still waiting for, as you mentioned, proof or disproof of its virulence. do we think we have the right formulation for boosters with omicron knocking on our door? >> yeah, and i would say there's a stronger signal than even last week when we talked about that transmissibility because the cases are increasing in south africa, and you're seeing, you know, cluster of cases where tons of people have become infected from a primary index person who has omicron. i would say for the booster