Tom Frieden, director of the Centers for Disease Control and Prevention, speaks during the Influenza Outlook 2015-2016: Preparing for the Upcoming Season press conference at the National Press Club in Washington, DC, on September 17, 2015. AFP PHOTO/NICHOLAS KAMMNICHOLAS KAMM/AFP/Getty Images
Tom Frieden, director of the Centers for Disease Control and Prevention, speaks during the Influenza Outlook 2015-2016: Preparing for the Upcoming Season press conference at the National Press Club in Washington, DC, on September 17, 2015. AFP PHOTO/NICHOLAS KAMMNICHOLAS KAMM/AFP/Getty Images NICHOLAS KAMM AFP/Getty Images
Tom Frieden, director of the Centers for Disease Control and Prevention, speaks during the Influenza Outlook 2015-2016: Preparing for the Upcoming Season press conference at the National Press Club in Washington, DC, on September 17, 2015. AFP PHOTO/NICHOLAS KAMMNICHOLAS KAMM/AFP/Getty Images NICHOLAS KAMM AFP/Getty Images