Prevention and Transmission
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.
- Prevent Zika by avoiding mosquito bites.
- Zika can be passed from a pregnant woman to her fetus. Infection during pregnancy can cause certain birth defects.
- Zika can be passed through sex from a person who has Zika to his or her sex partners. Condoms can reduce the chance of getting Zika from sex. Condoms include male and female condoms.
- No vaccine exists to prevent Zika.
- Local mosquito-borne Zika virus transmission has been reported in the continental United States.
- The mosquitoes that can spread Zika are found throughout the United States.
What You Can Do
How Zika Spreads
- Page last reviewed: February 12, 2018
- Page last updated: February 12, 2018
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