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It's just a matter of everybody being up to date on their vaccine regimen? or should we -- are we discussing more vaccines? and what about this immune escape business? the idea that this new variant, ba.5, seems to be able to bob and weave its way our round you are inherent ability to fight this off because you have had covid or because you have been vaccinated properly. >> well, ali, that last point, i'll take that first. that's not unexpected. the [inaudible] virus like flu, say, for the last 40 years, all of us have been immunized against flu, much longer than that. flew fades and causes im...

Wintertime, if we are not up to date with our vaccines, those individuals who are high-risk are going to be -- end up in the hospital because, while we focus so much on antibodies, blocking the virus from causing us to test positive, blocking the onset of a sore throat, the really key component here is something called t cells that harbor, pretty much, in our lungs. they help prevent severe infection from occurring but it turns out that those t cells do require periodic boosts. the people who most need them are not getting them. that's why we are really concerned about the winter, potentially,...