More cases of the Zika virus have been confirmed and U.S. officials are warning travelers to steer clear of the countries where the virus has originated.

FOX's Eben Brown reports:

Even the World Health Organization will hold an emergency meeting this Monday on the matter.

31 cases of travel-acquired Zika virus infection have been reported in 11 states plus Washington, D.C., even more in Puerto Rico and the U.S. Virgin Islands.

The mosquito species that does the transmission is already in the U.S.:

(Schuchat) "So it's possible, even likely, that we will see limited Zika outbreaks in the U.S."

Doctor Anne Schuchat at the CDC. And while Zika virus symptoms are considered to be mild, and short lived, the risk is to babies in the womb. More than 3,800 babies in Brazil born to infected mothers had deformities to the head.

Eben Brown, FOX News.