This week, Dr. Fauci announced he plans to step down from his roles as director of the National Institute of Allergy and Infectious Diseases, chief of the NIAID Laboratory of Immunoregulation and chief medical adviser to President Biden. Dr. Fauci has held his director position at the National Institute of Allergy and Infectious Diseases for 38 years, and has been a crucial figure in helping navigate the United States through health crises including HIV/AIDS and COVID-19. Head over to NPR for a look at Dr. Fauci's incredible career, plus what's next for him once he retires.