Dr. Anthony Fauci of the National Institute of Allergy and Infectious Diseases revealed on Monday that he will be stepping down from service in December after four decades with the government. He is the “chief medical advisor” on the pandemic response for Joe Biden and had a similar role during the tenure of President Donald Trump. His medical advice was often questioned and proven to be faulty, including masking, social distancing, and quarantine periods, among other criticized measures.

USA Today reports:

“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.

In July, Fauci had previously said he intended to retire before the end of Biden’s current term.

Through the COVID-19 pandemic, Fauci advised President Donald Trump and Biden, as well as a weary country, during a time of uncertainty over the virus. He held a similar role as a public figure on infectious disease for viral epidemics including HIV, SARS, swine flu, Zika, Ebola and avian influenza.