this is an important moment for the united states and biden. covid is an opportunity if we are able to vaccinate the world. >> exactly right, chuck. what he has done with covid domestically in many and since -- the less we try to get credit for it, the more credit we actually get. this is on a mass scale like coming in after a hurricane or after an earthquake. it really is a good thing. that said, andrea also raised the point, pfizer is a two-dose vaccine. there are 8 billion people in the world. so 5 million, as sizeable as it is, covers 200 million people. it just gives you the enormity of the task. we still need others to step up