Dr. Anthony Fauci, the government's top infectious disease expert, has announced he will step down from public service in December of 2022. RELATED: First lady Jill Biden tests positive for COVID-19 | USA TODAY https://bit.ly/3PMpopH Fauci, 81, serves as chief medical adviser to President Joe Biden and director of the National Institute of Allergy and Infectious Diseases. He said Monday that he will be leaving both positions after four decades of advising seven presidents. "It has been the honor of a lifetime to have led the NIAID, an extraordinary institution, for so many years and through so many scientific and public health challenges. I am very proud of our many accomplishments," he said Monday in a statement. » Subscribe to USA TODAY: http://bit.ly/1xa3XAh » Watch more on this and other topics from USA TODAY: https://bit.ly/3KtpSjh » USA TODAY delivers current local and national news, sports, entertainment, finance, technology, and more through award-winning journalism, photos, videos and VR. #Fauci #Covid19 #DrFauci