risk of the mitigation measures themselves. as we head into a new chapter of the pandemic, with a whole lot more data and tools to manage risk. >> so when you look at the different risk factors, you know, as the parent of two small children who -- children who mask at school, i want to know when is it, look, public policy proposal aside, that's the next step after this, when is it safe to say, you know what, this might be an okay time for kids to not have masks in the classroom? >> it is a great question, brianna. i sympathize with parents who have little ones. my kids are teenagers and they're having a hard time with masks for social emotional reasons. but for little ones, remember first of all the world health organization never recommended masking kids under the age of 5 and that's not because their anti-science or anti-mask. there is no clear evidence today. there is no clear evidence that masking children in school and the real world makes a