Vaccine Research Nathaniel Jackson, a research assistant with the emerging infectious disease branch at the Walter Reed Army Institute of Research, studies coronavirus protein samples, June 1, 2020. The branch is part of the institute’s effort to produce a COVID-19 vaccine candidate. SHARE IMAGE: Download Image: Full Size (4.5 MB) Photo By: Mike Walters, Army VIRIN: 200701-A-PR201-2006.JPG Photo Gallery