U.S. Secretary of State Antony Blinken, with NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci and U.S. Representative Barbara Lee (D-CA), participates in a World AIDS Day event hosted by the Business Council for International Understanding in Washington, U.S. December 2, 2022. REUTERS/Jonathan Ernst 

U.S. Secretary of State Antony Blinken bids farewell to U.S. Representative Barbara Lee (D-CA) and NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci after his remarks to a World AIDS Day event hosted by the Business Council for International Understanding in Washington, U.S. December 2, 2022. REUTERS/Jonathan Ernst 

U.S. Secretary of State Antony Blinken bids farewell to NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci after his remarks to a World AIDS Day event hosted by the Business Council for International Understanding in Washington, U.S. December 2, 2022. REUTERS/Jonathan Ernst 

U.S. NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci participates in a World AIDS Day event hosted by the Business Council for International Understanding in Washington, U.S. December 2, 2022. REUTERS/Jonathan Ernst 

U.S. Secretary of State Antony Blinken and NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci, with U.S. Representative Barbara Lee (D-CA) participate in a World AIDS Day event hosted by the Business Council for International Understanding in Washington, U.S. December 2, 2022. REUTERS/Jonathan Ernst 

U.S. Secretary of State Antony Blinken bids farewell to NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci after his remarks to a World AIDS Day event hosted by the Business Council for International Understanding in Washington, U.S. December 2, 2022. REUTERS/Jonathan Ernst 

U.S. Secretary of State Antony Blinken and NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci, U.S. Representative Barbara Lee (D-CA) and U.S. Global AIDS Coordinator John Nkengasong participate in a World AIDS Day event hosted by the Business Council for International Understanding in Washington, U.S. December 2, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci departs after joining White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci joins White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci joins White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci joins White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci and White House COVID-19 Response Coordinator Ashish Jha join White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci and White House COVID-19 Response Coordinator Ashish Jha join White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci joins White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci joins White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci joins White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci joins White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci joins White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci joins White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci and White House COVID-19 Response Coordinator Ashish Jha join White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci and White House COVID-19 Response Coordinator Ashish Jha join White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci and White House COVID-19 Response Coordinator Ashish Jha join White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci joins White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci joins White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci joins White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst TPX IMAGES OF THE DAY 

NIH National Institute of Allergy and Infectious Diseases Director Anthony Fauci joins White House Press Secretary Karine Jean-Pierre for the daily press briefing at the White House in Washington, U.S. November 22, 2022. REUTERS/Jonathan Ernst 

U.S. Senator Richard Burr (R-NC) questions Dr. Anthony, Fauci, Director of the National Institute of Allergy and Infectious Diseases, during a Health, Education, Labor, and Pensions Committee hearing on the monkeypox outbreak, in Capitol Hill in Washington, U.S., September 14, 2022. 

U.S. Senator Rand Paul (R-KY) questions Director of the National Institute of Allergy and Infectious Diseases Dr. Anthony Fauci during a Senate Health, Education, Labor, and Pensions Committee hearing on the monkeypox outbreak, in Capitol Hill in Washington, U.S., September 14, 2022. 

Dr. Anthony Fauci, Director of the National Institute of Allergy and Infectious Diseases gestures towards Dr. Rochelle Walensky, Director of the U.S. Centers for Disease Control and Prevention, during a Senate Health, Education, Labor, and Pensions Committee hearing on the monkeypox outbreak, in Capitol Hill in Washington, U.S., September 14, 2022. 

Dr. Anthony Fauci, Director of the National Institute of Allergy and Infectious Diseases, testifies during a Senate Health, Education, Labor, and Pensions Committee hearing on the monkeypox outbreak, in Capitol Hill in Washington, U.S., September 14, 2022. 

Dr. Anthony Fauci, Director of the National Institute of Allergy and Infectious Diseases, testifies during a Senate Health, Education, Labor, and Pensions Committee hearing on the monkeypox outbreak, in Capitol Hill in Washington, U.S., September 14, 2022. 

Dr. Anthony Fauci, Director of the National Institute of Allergy and Infectious Diseases, testifies during a Senate Health, Education, Labor, and Pensions Committee hearing on the monkeypox outbreak, in Capitol Hill, in Washington, U.S., September 14, 2022. 

U.S. Senator Rand Paul (R-KY) questions Director of the National Institute of Allergy and Infectious Diseases Dr. Anthony Fauci during a Senate Health, Education, Labor, and Pensions Committee hearing on the monkeypox outbreak, in Capitol Hill in Washington, U.S., September 14, 2022. 

U.S. Senator Rand Paul (R-KY) questions Director of the National Institute of Allergy and Infectious Diseases Dr. Anthony Fauci during a Senate Health, Education, Labor, and Pensions Committee hearing on the monkeypox outbreak, in Capitol Hill in Washington, U.S., September 14, 2022. 

U.S. Senator Rand Paul (R-KY) questions Director of the National Institute of Allergy and Infectious Diseases Dr. Anthony Fauci during a Senate Health, Education, Labor, and Pensions Committee hearing on the monkeypox outbreak, in Capitol Hill in Washington, U.S., September 14, 2022. 

U.S. Senator Rand Paul (R-KY) questions Director of the National Institute of Allergy and Infectious Diseases Dr. Anthony Fauci during a Senate Health, Education, Labor, and Pensions Committee hearing on the monkeypox outbreak, in Capitol Hill in Washington, U.S., September 14, 2022. 

Dr. Anthony Fauci, Director of the National Institute of Allergy and Infectious Diseases, attends a Senate Health, Education, Labor, and Pensions Committee hearing on the monkeypox outbreak, on Capitol Hill in Washington, U.S., September 14, 2022. 

Dr. Anthony Fauci, Director of the National Institute of Allergy and Infectious Diseases, testifies during a Senate Health, Education, Labor, and Pensions Committee hearing on the monkeypox outbreak, in Capitol Hill in Washington, U.S., September 14, 2022. 

U.S. Senator Rand Paul (R-KY) questions Director of the National Institute of Allergy and Infectious Diseases Dr. Anthony Fauci during a Senate Health, Education, Labor, and Pensions Committee hearing on the monkeypox outbreak, on Capitol Hill in Washington, U.S., September 14, 2022. 

Britain's Prince Charles, known as the Duke of Rothesay while in Scotland, takes part in a roundtable with attendees of the Natasha Allergy Research Foundation seminar to discuss allergies and the environment, at Dumfries House in Cumnock, Scotland, Britain, September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles, known as the Duke of Rothesay while in Scotland, takes part in a roundtable with attendees of the Natasha Allergy Research Foundation seminar to discuss allergies and the environment, at Dumfries House in Cumnock, Scotland, Britain, September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles, known as the Duke of Rothesay while in Scotland, takes part in a roundtable with attendees of the Natasha Allergy Research Foundation seminar to discuss allergies and the environment, at Dumfries House in Cumnock, Scotland, Britain, September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles, known as the Duke of Rothesay while in Scotland, takes part in a roundtable with attendees of the Natasha Allergy Research Foundation seminar to discuss allergies and the environment, at Dumfries House in Cumnock, Scotland, Britain, September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles, known as the Duke of Rothesay while in Scotland, takes part in a roundtable with attendees of the Natasha Allergy Research Foundation seminar to discuss allergies and the environment, at Dumfries House in Cumnock, Scotland, Britain, September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles, known as the Duke of Rothesay while in Scotland, takes part in a roundtable with attendees of the Natasha Allergy Research Foundation seminar to discuss allergies and the environment, at Dumfries House in Cumnock, Scotland, Britain, September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles, known as the Duke of Rothesay while in Scotland, takes part in a roundtable with attendees of the Natasha Allergy Research Foundation seminar to discuss allergies and the environment, at Dumfries House in Cumnock, Scotland, Britain, September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles, known as the Duke of Rothesay while in Scotland, takes part in a roundtable with attendees of the Natasha Allergy Research Foundation seminar to discuss allergies and the environment, at Dumfries House in Cumnock, Scotland, Britain, September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles, known as the Duke of Rothesay while in Scotland, takes part in a roundtable with attendees of the Natasha Allergy Research Foundation seminar to discuss allergies and the environment, at Dumfries House in Cumnock, Scotland, Britain, September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles, known as the Duke of Rothesay while in Scotland, takes part in a roundtable with attendees of the Natasha Allergy Research Foundation seminar to discuss allergies and the environment, at Dumfries House in Cumnock, Scotland, Britain, September 7, 2022. Jane Barlow/Pool via REUTERS 

Britain's Prince Charles, known as the Duke of Rothesay while in Scotland, takes part in a roundtable with attendees of the Natasha Allergy Research Foundation seminar to discuss allergies and the environment, at Dumfries House in Cumnock, Scotland, Britain, September 7, 2022. Jane Barlow/Pool via REUTERS 

Centers for Disease Control and Prevention (CDC) Director Rochelle Walensky looks up at a video monitor of Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases and chief medical adviser to President Biden, as they testify before a Senate Health, Education, Labor, and Pensions hearing to examine an update on the ongoing Federal response to COVID-19, at the U.S. Capitol in Washington, U.S., June 16, 2022. REUTERS/Kevin Lamarque 

Centers for Disease Control and Prevention (CDC) Director Rochelle Walensky looks up at a video monitor with Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases and chief medical adviser to President Biden, as they testify before a Senate Health, Education, Labor, and Pensions hearing to examine an update on the ongoing Federal response to COVID-19, at the U.S. Capitol in Washington, U.S., June 16, 2022. REUTERS/Kevin Lamarque      

Dr. Anthony Fauci, Director of the National Institute of Allergy and Infectious Diseases, attends a Senate Appropriations Subcommittee on Labor, Health and Human Services, Education, and Related Agencies hearing to discuss President Biden's fiscal year 2023 budget request for the National Institute of Health on Capitol Hill in Washington, U.S., May 17, 2022. Anna Rose Layden/Pool via REUTERS 

Dr. Anthony Fauci, Director of the National Institute of Allergy and Infectious Diseases, wears his mask as he testifies at a Senate Appropriations Subcommittee on Labor, Health and Human Services, Education, and Related Agencies hearing to discuss President Biden's fiscal year 2023 budget request for the National Institute of Health on Capitol Hill in Washington, U.S., May 17, 2022. Anna Rose Layden/Pool via REUTERS 

Director of the National Institute of Allergy and Infectious Diseases Dr. Anthony Fauci wears his mask as he testifies during the Senate Appropriations Subcommittee on Labor, Health and Human Services, and Education, and Related Agencies hearing to examine proposed budget estimates for fiscal year 2023 for the National Institutes of Health on Capitol Hill in Washington, U.S., May 17, 2022. Shawn Thew/Pool via REUTERS 

Dr. Anthony Fauci, Director of the National Institute of Allergy and Infectious Diseases, testifies at a Senate Appropriations Subcommittee on Labor, Health and Human Services, Education, and Related Agencies hearing to discuss President Biden's fiscal year 2023 budget request for the National Institute of Health on Capitol Hill in Washington, U.S., May 17, 2022. Anna Rose Layden/Pool via REUTERS 

Dr. Anthony Fauci, Director of the National Institute of Allergy and Infectious Diseases, testifies at a Senate Appropriations Subcommittee on Labor, Health and Human Services, Education, and Related Agencies hearing to discuss President Biden's fiscal year 2023 budget request for the National Institute of Health on Capitol Hill in Washington, U.S., May 17, 2022. Anna Rose Layden/Pool via REUTERS 

Dr. Anthony Fauci, Director of the National Institute of Allergy and Infectious Diseases, testifies at a Senate Appropriations Subcommittee on Labor, Health and Human Services, Education, and Related Agencies hearing to discuss President Biden's fiscal year 2023 budget request for the National Institute of Health on Capitol Hill in Washington, U.S., May 17, 2022. Anna Rose Layden/Pool via REUTERS 

Dr. Anthony Fauci, Director of the National Institute of Allergy and Infectious Diseases, testifies at a Senate Appropriations Subcommittee on Labor, Health and Human Services, Education, and Related Agencies hearing to discuss President Biden's fiscal year 2023 budget request for the National Institute of Health on Capitol Hill in Washington, U.S., May 17, 2022. Anna Rose Layden/Pool via REUTERS 

Director of the National Institute of Allergy and Infectious Diseases Dr. Anthony Fauci testifies during the Senate Appropriations Subcommittee on Labor, Health and Human Services, and Education, and Related Agencies hearing to examine proposed budget estimates for fiscal year 2023 for the National Institutes of Health on Capitol Hill in Washington, U.S., May 17, 2022. Shawn Thew/Pool via REUTERS