CDC: To Dodge Zika, Get Altitude Areas above 6.5K feet are likely safe for pregnant women By Arden Dier, Newser Staff Posted Mar 15, 2016 7:47 AM CDT 8 comments Comments Aedes aegypti mosquitoes are seen in Brazil. (AP Photo/Felipe Dana, File) (Newser) – Pregnant women need not avoid Zika-infested countries—if they stay a mile above sea level. Updated travel notices from the CDC note areas with elevations above 6,500 feet, including Mexico City, are considered safe for pregnant women because mosquitoes are "predicted to be largely absent," report the New York Times and Washington Post. Costa Rica, the Dominican Republic, Ecuador, Jamaica, Venezuela, and other Latin American countries also include high-elevation areas where Zika-carrying mosquitoes are unlikely to visit. It's not foolproof, however: Women visiting these areas can still get Zika through sex.