A medical assistant administers a COVID-19 vaccine dose to a woman at a clinic in Los Angeles on March 25, 2021.

Dr. Anthony Fauci, the longtime director of the National Institute for Allergy and Infectious Diseases, says he would support a vaccine mandate for air travel within the United States.

"I would support that if you want to get on a plane and travel with other people then you should be vaccinated," he said in an podcast interview with The Skimm, which is set to air later this week.

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