we were able to keep our children safely in school before vaccines. now today what do we have for our children? we have vaccines that we can use, we have school testing programs and new science that demonstrates tests the stay. this is where a child might be exposed in the classroom but if they are exposed they don t have to stay home and quarantine. test every other day or twice a week and stay in the classroom safely. what that has demonstrated is hundreds of thousands of person days of children in school rather than at home. we ve new science that has demonstrated the value of masking. 3 1/2 times increased risk of school outbreaks if you are unmasked in schools versus if you re masking in schools. this week we updated oir k-12 guidance consistent with our isolation quarantine guidance for the general public so people can come back to school after isolation after five days. thank you for that and for your commitment to keeping our schools open. quick question for you, ms.