The CDC has issued travel advisories for couples planning on starting or adding to their families and for pregnant women. The Zika virus has been linked to infections and birth defects. Women who are pregnant or may be pregnant should take extra precautions to avoid mosquito bites when traveling in Mexico, the Caribbean, Central American and South America.
From the CDC: Zika virus is spread to people through mosquito bites. The most common symptoms of Zika virus disease are fever, rash, joint pain, and conjunctivitis (red eyes). The illness is usually mild with symptoms lasting from several days to a week. Severe disease requiring hospitalization is uncommon.
More information and updates are here.