like obesity, cardiovascular disease and diabetes. this is an important moment to understand how significant this kind of information is right now. >> if you look at those demographics, it's the same as those at risk of severe covid even if they're not vaccinated. i think what's happening is the vaccinations may be showing a greater waning of immunity over time in those populations. that may be the reason for it. that's the reason israel, when they first announced their booster plan to give a third immunization, they focused more on older individuals, i think because they had some of that data. in that sense it makes sense. in terms of doing something about this epidemic in the united states, i think the bigger issue is what's the president going to do to reach those 80 million unvaccinated americans who are vaccine eligible. yes, they've done a good job reaching 170 million, but this delta variant is so highly