(CNN) — The CEOs of Southwest Airlines, American Airlines and Delta Air Lines say they are not requiring unvaccinated employees to receive the shot, breaking with United Airlines' mandate that workers get vaccinated by October 25 or face getting fired. In an internal memo obtained by CNN, Southwest Airlines CEO Gary Kelly said the airline will "continue to strongly encourage" that workers get vaccinated, but the airline's stance has not shifted. Delta Air Lines CEO Ed Bastian told Good Day New York on Tuesday that 75% of its workforce has already been vaccinated even without a companywide mandate. Situation for new hiresIn May, Delta became the first major carrier to require that all new hires be vaccinated . United Airlines made a similar announcement in June.

Source: CNN August 10, 2021 21:45 UTC