Dr. Anthony Fauci, Director of the National Institute of Allergy and Infectious Diseases, speaks during a White House press briefing, at the James Brady Press Briefing Room of the White House January 21, 2021 in Washington, DC.Alex Wong | Getty ImagesWhite House Chief Medical Advisor Dr. Anthony Fauci said on Sunday he would take the newly approved Johnson & Johnson Covid-19 vaccine and urged Americans to take whichever shot is available when they are eligible.The Food and Drug Administration approved J&J’s vaccine on Saturday, giving the U.S. a third tool to fight the pandemic following vaccines from Moderna and Pfizer. …