The former top US health official has faced death threats since leading the country's COVID-19 response.

The outgoing president says the action will prevent "unjustified... politically motivated prosecutions".

The former chief medical adviser is now recovering at home after suffering fever and chills.

It is first time the infectious disease expert has publicly testified since leaving the White House in 2022.

Marjorie Taylor Greene challenged the US' former top doctor, who also got emotional during his testimony.

Anthony Fauci tells the BBC's Katty Kay that 96% of the US population has a degree of immunity.

Dr Anthony Fauci speaks to Americast as he stands down as chief medical adviser to President Joe Biden.

The infectious disease specialist became the most famous doctor in the US during the pandemic.