mike: cdc is promoting its strategy test to stay, still more than 800 schools across the us unexpectedly closed this week according to rubio with more than 500 schools closed in the first week of january. dr. ashish jha, are we headed for full-scale remote learning and as a public health matter, closed versus stay open? >> this is unfortunate. here we are almost two years into the pandemic and we know how to keep schools open and safe. this really should not even be on the table and i'm disappointed to see this happening. we know that for kids being in school is the right thing for them, for their mental health, for their education and we have all sorts of tools to keep schools open, so i don't really understand why districts are doing this. i think we can keep schools open and we should absolutely keep schools open. mike: what about the other health concerns of shutting down schools in terms of school-aged children such as mental, emotional, physical and social health?