going to do much, other than kind of give you diminishing returns. you might stave off an inevitable infection for some time, but i don't think chasing mild illness with boosters makes sense. i think we really want to focus on severe disease. there may be a case for fourth doses in immunocompromised people who don't respond well to the vaccine. but for the general population, i think we kind of have to move beyond these first-generation vaccines if we're going to look for more protection that we're getting. and i think the protection we're getting is sufficient against what matters. >> let me play a little devil's advocate here and say, what if this isn't just about preventing people from being hospitalized or even death? there's a new "washington post" article, for example, detailing another study into the prevalence of people having strange heart issues several months after recovering from covid. and the president of the american heart association says, in fact, they're expecting a tidal wave of cardiovascular events in the coming years from direct and indirect causes of covid. given that we haven't had enough time to have a really broad understanding of what the long-term effects of having have