Dr. Anthony Fauci, US Health and Human Services Secretary Alex Azar and National Institutes of Health Director Dr. Francis Collins received their first doses of Moderna's Covid-19 vaccine Tuesday. The shot, which Fauci, the director of the National Institute of Allergy and Infectious Diseases, received in the left arm, was administered at the NIH Clinical Center in Bethesda, Maryland, by Dr. Heike Bailin, chief of the NIH Occupational Medical Services.