because of vaccine and boosts in this country, if you are still concerned, if, though, you still have a preexisting condition that you have to watch out for, is one-way masking going to be significant? if i'm worried and i put on an n95 mask, can i still feel comfortable going into a restaurant or a gym or a theater when i am the only one masked? >> yes, you can. and that's the whole purpose. i'm so glad you brought that up, katy, because that's the purpose of upgrading, to take more ownership of your own health. if you feel like you're in the higher risk category, as we now are entering hopefully this glide path towards normal, one-way masking with a better mask is the way that you can take greater ownership of your own health and protect yourself against a positive test. again, if you're at high risk, that's even more vital. i hear it all the time from immunocompromised individuals who are worried about their response to the vaccine. this messaging is specifically for you. we're going to talk about kids