hello and thank you for joining me. i'm victor blackwell. allison is off. we're two years in the pandemic and facing another holiday season weighed down by cancellations and restrictions and for a lot of people confusion. right now the delta variant makes up 97% of the cases in the u.s. but dr. fauci said the very contagious omicron variant will become the dominant variant or strain in the country in the coming weeks. here is good news from moderna. encouraging preliminary data suggesting that the covid boost ser effective against the omicron variant. cnn's athena jones has more on the latest covid developments. >> it is going to be a tough few weeks to months as we get deeper into the winter.