In the meantime, the Centers for Disease Control and WHO recommend that potential and expecting mothers exercise caution.
The CDC says in the U.S. the only confirmed cases of Zika have been transmitted through sexual contact. The CDC warns case counts are likely to increase — and the virus will go where the Aedes mosquito can survive.
On Friday, the CDC issued new recommendations to those who have traveled to Zika-prone areas: Use condoms during sex or don't have sex.
Agencies are not yet banning travel in affected regions outright, but the American Red Cross and Canadian Blood Services have instituted blood donation delays for those returning from places where Zika is known to spread. (Video via American Red Cross)
Defense against mosquitoes is defense against Zika. The CDC recommends long clothing and insect repellent. If you develop symptoms, go see a doctor. (Video via knglaser / CC BY 3.0)
This video includes images from Getty Images.