and so are graveyards full of people that have made that mistake. >> an important message there from there anthony fauci. cnn as only cnn can has correspondents and resources the right around the globe to bring you the very latest. we'll hear about the biden administration's plan from washington there, and we've got live reports ahead from london, berlin, tokyo as well as jerusalem. so stay with us for that. but first, we are learning president biden was in close contact with a staffer who has tested positive for covid. mr. biden tested negative on monday and will receive another test on wednesday. he plans to address the nation later today on the pandemic. cnn's jeff zeleny reports. >> reporter: president biden is scheduled to address the nation tuesday afternoon from the white house, specifically talking again about the omicron variant which has now overtaken delta and other strains as the most dominant variant of covid-19 in the u.s. now, the president is not going to be delivering a, quote,