country now fully vaccinated. still the number of hospitalizations is trending in the wrong direction and we have read some hospital systems are being challenged. i am curious how concerned you are that some hospitals might once again be overwhelmed the way they were at the start of the pandemic. >> that is a reality that we must contend with. with this virus we can never be caught asleep at the wheel. we can't afford to let our guard down, especially with the proliferation of new -- and i will say this again. as long as we have significant portions of the american population and more broadly across the globe who are unvaccinated, the potential for variants to emerge that are more transmittable like the delta and maybe even more lethal will present us with a challenge of our health systems being overwhelmed. we have to work together in order to keep the most people safe and to keep our health system functioning at levels