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Previousing today, the director of the cdc announced it's expanding surveillance at four major international airports. as the number of countries detecting the variant climbs to 20. this as we are learning about possible new testing requirements for travelers entering the u.s. our chief white house correspondent kaitlan collins joins us now with the latest. so, what about these new testing requirements? >> so, what this would essentially do and we should note, no final decisions have been made. but would shorten the time period in which you could be tested before you return or get on a flight ...

Cnn's john berman on "new day" this morning that the majority of cases of the variant that she has seen have been mild. also, at a white house previousing today, the director of the cdc announced it's expanding surveillance at four major international airports. this as we are learning about possible new testing requirements for travelers entering the u.s. our chief white house correspondent kaitlan collins joins us now be the latest. so, what about these new testing requirements? >> so, what this would essentially do and we should note, no final decisions have been made. but would shorten the ...