
Speaking to CNN, Dr Fauci, a member of the White House coronavirus task force, said he had personally received death threats.
As a result he said he had hired security to protect his family.
The top doctor has been at odds with President Donald Trump at several points during the pandemic.
"Getting death threats for me and my family and harassing my daughters to the point where I have to get security is just, I mean, it's amazing," Dr Fauci, who has become a household name in the US, said.