is an associate professor of infectious diseases at the GW School of Medicine and Health Sciences.

is an associate professor of medicine and an infectious disease expert at the GW School of Medicine and Health Sciences.

is an associate professor of global health and an expert in infectious diseases and epidemiology, at the GW University Milken Institute School of Public Health. 

is the clinical director of the GW University Vaccine Research unit and professor of medicine at the GW School of Medicine and Health Sciences.