About Zika

What we know

• Zika is spread mostly by the bite of an infected Aedes species mosquito (Ae. aegypti and Ae. albopictus). These mosquitoes bite during the day and night.
• Zika can be passed from a pregnant woman to her fetus. Infection during pregnancy can cause certain birth defects.
• There is no vaccine or medicine for Zika.
• Local mosquito-borne Zika virus transmission has been reported in the continental United States. Learn more.