KGO ABC World News Tonight With David Muir December 28, 2021 23:35:00
Asymptomatic people to five days followed by five days of masking. but the guidance making no mention of a test before leaving isolation. >> i actually think it would help a lot to ask people to get a negative test, as well. it would actually make a big difference, so i don't know why the cdc did not put that in. i suspect it might be because tests are still hard to come by and that may make it even harder. >> reporter: but new york city plans to make testing the center of a new plan to keep more students in the classroom. >> this is how we're going to look at schools from this point on. keep ...