Dr. Adalja, a board-certified physician in infectious disease, critical care medicine, emergency medicine and internal medicine, specializes in the intersection of national security with catastrophic health events. He publishes and lectures on bioterrorism, pandemic preparedness and emerging infectious diseases. He is a frequent guest on national radio and television programs. During the Covid-19 pandemic, he has been treating patients, engaging in high-level policy discussions, advising various organizations and communicating extensively with the public.