Washington, UNITED STATES
Health and Human Services Secretary Alex Azar smiles after handing a challenge coin to Shylee Stewart,...
Health and Human Services Secretary Alex Azar smiles after handing a challenge coin to Shylee Stewart, a labor and delivery nurse, after she received a COVID-19 vaccination at George Washington University Hospital in Washington, D.C., U.S. December 14, 2020. Jacquelyn Martin/Pool via REUTERS