too much on keeping business going, and not enough on keep people safe, especially healthcare workers right in the middle this pandemic storm. >> schools in d.c. will require all students and staff to have negative covid tests to come back to class. new york city will require rigorous testing, too. all that as the white house says it expects to sign a contract for a half billion at-home covid tests next week. as the centers for disease control faces sharp question over new guidelines for covid-weary americans. >> it really had a lot to do with what we thought people would be able to tolerate. >> reporter: the recommendations of five instead of ten ice lace days for those testing positive, but showing no symptoms, then five days of masking, is aimed at keeping people working, but it's raising alarms, too. >> there's absolutely no data that i'm aware of with the omicron variant that holds