Zika virus 'not controllable': CDC director's grim warning

The director of the Centers for Disease Control and Prevention delivered a grim assessment Tuesday of the government's ability to contain Zika, saying it's too late to stop the dangerous virus from spreading throughout the United States.  "Zika and other diseases spread by (the Aedes aegypti mosquito) are really not controllable with current technologies," CDC Director Thomas Frieden said. "We will see this become endemic in the hemisphere."