DOD experts explain: The science behind the COVID-19 vaccines
Letzibeth Mendez-Rivera a Lab Manager with The Emerging Infectious Disease Branch (EIDB), at the Walter Reed Army Institute of Research (WRAIR), studies Coronavirus protein samples, June 1, 2020. The EIDB is part of WRAIR's effort to produce a COVID-19 vaccine candidate. (U.S. Army photo by Mike Walters/ Released)