The nation's top infectious disease doctor doesn't scare easy. But Tom Frieden — the head of the Centers for Disease Control — is deeply worried about the rise of Zika virus, which is spreading across the Americas and causing birth defects in babies. And he's shocked that Congress, which has refused to fund the White House's emergency Zika request, doesn't share his concern.
Dr. Frieden joined POLITICO's Dan Diamond to explain how he thinks about global disease threats (starts at the 2:00 mark)...
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