The hantavirus outbreak on the MV Hondius has focused the public's attention on cruise ship safety.

Leaving the WHO means the U.S. lacks access to necessary information about infectious disease.

The hantavirus outbreak on the MV Hondius has focused the public's attention on cruise ship safety.

“The CDC is not even a player," said Lawrence Gostin, an international public health expert at Georgetown University. “I've never seen that before.”