we re getting reports from our correspondents around the globe on all of the coronavirus developments. we begin with cnn s tom foreman in washington. reporter: the cdc announcementen isolation time came hours after president biden admitted to the nation governors, covid testing has not kept pace with the omicron threat. it s not enough. if i had known, we would have gone harder, quicker. reporter: with covid cases soaring, more than 2,000 flights were grounded worldwide, nearly 3,000 delayed in the u.s. just today. at sea, several cruise ships have been affected, turned away from ports, in all, dampening the festivities. they weren t enforcing masks until a lot of people were getting covid and they were enforcing masks more. i don t think i ll go on a cruise again honestly, at this point. reporter: as the omicron