Washington, UNITED STATES
U.S. President Joe Biden visits the National Institutes of Health (NIH) in Bethesda, Maryland
U.S. President Joe Biden greets an NIH staff member as NIH Allergy and Infectious Diseases Director Dr. Anthony Fauci and NIH Director Francis Collins listen during a visit to the Viral Pathogenesis Laboratory at the National Institutes of Health in Bethesda, Maryland, U.S., February 11, 2021. REUTERS/Carlos Barria
