Regardless of vaccination status, people that test positive should isolate for five days, as we heard. if they don't have symptoms at that time, they can leave isolation, if they can continue to wear a mask for five more days, to minimize the risk of infecting other people. big shift here from cdc, based on the ziescience, in an effort minimize interruption of work and of school of our daily lives. >> sure, it's based on the science. isn't there a risk of spreading the virus, considering the infectious period can vary, as you say. mainly, a few days. but it can go up to a few weeks. >> you kno...