In response to angry, sometimes mocking questions from Republican senators, Fauci declined to answer more than 100 times.
Gov. Kathy Hochul signed an executive order Friday morning allowing New Yorkers to get a COVID-19 vaccine at pharmacies in the state without a prescription.
The vaccines are approved for use in people 65 and older, as well as those younger with at least one health condition that makes them high-risk.
"100% of adults in this country can still get the vaccine if they choose," FDA Commissioner Dr. Marty Makary said
U.S. regulators approved updated COVID-19 shots Wednesday but limited their use for many Americans - and removed one of the two vaccines available for young children.
The American Academy of Pediatrics said on Tuesday that children ages 6 months to 23 months should receive a COVID-19 vaccine, in contrast with federal health officials.