A former head of the Food & Drug Administration, who is now a professor at Duke University, said full FDA approval of the Pfizer vaccine could give companies even more power to mandate vaccinations. “It’s important to know that under U.S. law, for emergency use of a vaccine, companies, universities, other institutions already had quite broad authority if there was good reason from the standpoint of the safety of their workplace to require vaccination,” McClellan said. #Today Dr. Mark McClellan is a former head of the FDA turned Duke University Health Policy Expert who gave some insight this afternoon about what full approval for the Pfizer vaccine means for company-wide and college campus mandates across America.