United Airlines says 99% of workforce is vaccinated, nearly 600 workers to be fired

United Airlines said 99% of its employees have been vaccinated against the Covid-19 virus, and nearly 600 employees who didn't get the vaccine will be fired. In a memo from CEO Scott Kirby and President Brett Hart, the Chicago-based airline (NASDAQ: UAL) said that the decision to fire the unvaccinated employees was "an incredibly difficult decision but keeping our team safe has always been our first priority." Last month, United became the first major U.S. air carrier to institute an employee vaccination…