good morning. thank you for your "new day." boris, good morning to you. >> kaitlan, thank you for joining us. our first time anchoring together. hopefully it will be fun? >> it will be. yeah, we begin this morning with more evidence that the united states is in the middle of a dangerous summer surge of covid-19 fueled by the spread of the delta variant. case rates are climbing while the number of people getting fully vaccinated is dwindling. >> the number is four times high j higher only 250,000 people are being vaccinated per day. that's the lowest daily average since the end of january.