CDC reveals massive behind-the-scenes public health operation that kept FIFA World Cup fans safe

FIRST ON FOX: The World Cup tested not only the players on the pitch, but the Trump administration's large public health operation to safeguard the public as fans from all over the world moved across the United States.

Amid the fandom, as 11 American cities hosted 39 teams and 78 matches, the Centers for Disease Control and Prevention (CDC) operated largely behind the scenes to detect emerging threats and to respond to public health emergencies.

"Readiness is not only measured by how we respond to emergencies...