President byden has set a target of helping every country vaccinate about 70 % of its population by fall of 20 22. For every one shot we've administered to date in america, we have now committed to do three shots to the rest of the world. Some ofthe manufacturers are doing teared pricing schemes to help make it cheaper for countries to buy them. But a lot of this is ad hock and piecemeal, and that makes it really hard for countries to actually anticipate when they'll be able to receive vaccines.