By May 24, 2021 02:17 AM EDT (Photo : Jim Lo Scalzo-Pool/Getty Images) Senate Health Committee Hears Testimony From Federal Officials On Efforts To Combat COVID-19 WASHINGTON, DC - MAY 11: Anthony Fauci, Director of the National Institute of Allergy and Infectious Diseases at the National Institutes of Health (NIH), testifies before a Senate Health, Education, Labor, and Pensions hearing to examine an update from Federal officials on efforts to combat COVID-19 in the Dirksen Senate Office Building on May 11, 2021 in Washington, DC. Dr. Anthony Fauci, President Joe Biden's top adviser on the COVID-19 pandemic, has stated that he is "not convinced" that the deadly virus evolved naturally and has called for further investigations into how it spread.