Mosquitoes spread Zika virus. Illness is generally mild, but infection can cause birth defects.
Prevent Zika by protecting yourself from mosquito bites, by using condoms, or by not having sex.
Recommendations to prevent Zika in travelers and people living abroad are listed by areas of risk.
Many people with Zika have no or mild symptoms. Infection during pregnancy can cause birth defects.
Zika can spread from a pregnant woman to her fetus, leading to serious birth defects.
Identify countries and territories at risk for Zika.
Get tested for Zika if you have symptoms and traveled or had sex with a traveler to a risk area.
For Professionals
Illness is typically mild, but infection during pregnancy can cause serious birth defects.
No vaccines or medicines are available to prevent or treat Zika. Patient care is supportive.
Zika virus can spread through sex, even if the infected person is asymptomatic.
Find guidance for testing pregnant and non-pregnant patients using molecular or serologic methods.
Monitor a pregnant women’s fetus if they may have been exposed to Zika during pregnancy.