we can get technology to the world faster. the single biggest gap here has remained the global response, so we have 80% of many european countries vaccinated and only 10%, 15% of countries in africa, if that. that is the gap that is causing this virus to replicate, you know, to move around, and the more it replicates, the more it mutates, which has changed forms. but the bottom line is we have lived off testing for the variant for a long time. we have to learn how to protect ourselves and not shut down the entire global economy again, because that is not an option. >> these travel options based on risk, wouldn't many countries want to ban travel from the u.s.? fareed, when do we get to a point where there needs to be vaccine mandates for air