Common source of exposure for 66 cases remains unknown.

It makes sense. WHO stonewalling was starting to sound like Nixon during Watergate.

A sobering development that the CDC has been concerned about for some time.

CDC: 279 pregnant women with possible Zika virus in U.S. states and territories.

FDA calls June 2-3 meeting, CDC posts new guidelines on a hidden, slow-burning epidemic.

Zika clone research could explain why virus has exploded into an epidemic in the Americas. 

No formal CDC guideline against it, but air flow can draw dust and mold into room.