National Institute of Allergy and Infectious Diseases (NIAID)For more than 60 years, NIAID research has led to new therapies, vaccines, diagnostic tests, and other technologies that have improved the health of millions of people in the United States and around the world. NIAID intramural and extramural scientists are studying this virus today. Key areas of investigation include basic research on its origins, how it cause disease, and developing animal study models, new treatments, and vaccines. Directed by Dr. Fauci since 1984.