Tom Frieden, M.D., M.P.H., director of the Centers for Disease Control and Prevention, kicks off the 2016-2017 flu season by getting vaccinated at the National Foundation for Infectious Diseases news conference. In revealing the latest U.S. flu vaccine coverage, he noted a measurable drop among those 50 years and older, asking &ldquo;if 9 out of 10 doctors are getting a flu vaccine, why aren&rsquo;t you?&rdquo;