it has now spread to more than 38 countries. so we are certainly seeing that it has moved within the human movements very effectively. >> yeah. it also reinforces an important thing i've been wanting to talk to you about, which is no one is safe unless everyone is safe, which has become the mantra and the global effort with vaccines. world health organization has been very clear that wealthier nations need to do more to get the rest of the world vaccinated. and the biden administration just announced it's shipping 9 million vaccine doses to africa today, 2 million to other countries. i'm curious, what is the real impact of that amount of vaccines compared to the need right now? >> well, it's certainly a big help. i think it's also symbolic that countries like the u.s. and others are now seeing and acting on the need. we did hear a lot of talk earlier, but now we're actually seeing action being taken. and that is great because i'm sorry that it took omicron to