infected. the isolation period is now cut to five days. they said, if you want to take a test after those five days, fine. but as of today, the director added an important caution. >> after we released our guidance of recommendations early last week, it became very clear that people were interested in using the rapid test not authorized for this purpose. if one is to take an extra step and perform a test at the end of their five-day isolation period, we wanted to make sure people understood how they should be interpreted. if that test is positive, people should stay home for those extra five days, and if that test is negative, people really do need to understand that they must continue to wear their mask for those extra five days. >> senior medical correspondent elizabeth cohen. elizabeth, the issue was, is the cdc becoming more helpful or confusing? where are we after that?