United Airlines CEO: Insisting on vaccines "right thing to do"
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American, Alaska Airlines and JetBlue add vaccine mandates for workers. (Published 2021)
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All But 2 Major U.S. Airlines Have Announced Vaccine Mandates
By Suzanne Rowan Kelleher
Inside United Airlines' Decision to Mandate Coronavirus Vaccines (Published 2021)
By Niraj Chokshi & Noam Scheiber