U.S. President Joe Biden, right, and U.S. Vice President Kamala Harris applaud after speaking in the Rose Garden of the White House in Washington, D.C., U.S., on Thursday, May 13, 2021. Fully vaccinated Americans can do away with wearing masks, the head of the U.S. Centers for Disease Control and Prevention said today, the most significant shift in federal guidelines since the start of the pandemic. Photographer: Tasos Katopodis/UPI/Bloomberg via Getty Images