On March 5, 2020, the United States Army Medical Research and Materiel Command at Fort Detrick and the Walter Reed Army Institute of Research at Silver Spring, both located in western Maryland, announced that they were working on a vaccine.
Tarehe 5 Machi 2020, Jeshi la Marekani la Utafiti wa Matibabu na Jeshi la Materiel huko Fort Detrick na Taasisi ya Utafiti ya Jeshi la Walter Reed huko in Silver Spring, yote magharibi mwa Maryland, walitangaza kuwa wanashughulikia chanjo.