by John BIERS NEW YORK, United States (AFP) — United Airlines and Tyson Foods provided fresh evidence Thursday supporting coronavirus vaccine mandates, while AT&T expanded its jab requirement to unionized workers. The announcements show how more large companies are moving ahead with vaccine requirements, despite loud criticism from some employee groups and politicians. President Joe Biden on September 9 announced the government would demand large businesses to require vaccinations, but the administration has yet to […]