Supplies the U.S. government, through the U.S. Agency for International Development, donated to India, are unloaded from a U.S. Department of Defense C-5M in New Delhi, India on April 30, 2021. (USAID photo by Nicholas Geboy)

People wait to get their vital signs checked before receiving the COVID- 19 vaccine at a government hospital in Noida, a suburb of New Delhi, India, Thursday, April 1, 2021. India is accelerating its vaccination drive by opening it up for everyone above 45 years just as cases spike sharply after several months. (AP Photo/Altaf …

Scientists researching COVID-19

U.S. cracks down on COVID-19 scams

Computer scientist Madhav Marathe leads a team at the University of Virginia’s Biocomplexity Institute. (© Dan Addison/University of Virginia)

Two-time Fulbright alumnus Elvis Rivera holds up one of the face shields he made for health care workers in Honduras. (Courtesy of Elvis Rivera)

The vial seen here March 20 contains a potential COVID-19 vaccine developed at the Novavax company in Rockville, Maryland. ( Andrew Caballero-Reynolds/AFP/Getty Images)

A volunteer receives the vaccine in the first-stage clinical trial studying the safety of Moderna’s potential vaccine for COVID-19. (© Ted S. Warren/AP Images)

Artist impression of a viral surface. Coronavirus/COVID-19

A microbiologist demonstrates using a loop to work with bacteria at the Centers for Disease Control and Prevention in Atlanta. (© Branden Camp/AP Images)

U.S. marks 15 years of saving lives on World AIDS Day

Lesbian, gay, bisexual and transgender people, intersex (LGBTI)