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Zika virus

Also called: Zika virus

A mosquito-spread virus that's usually mild but can cause birth defects if caught in pregnancy.

PregnancyAvoid travel to Zika areas

Overview

Most people with Zika have mild or no symptoms.

Zika can spread through sex, so condoms are advised after travel.

Symptoms

Common signs:

  • Rash, fever, red eyes

Less common

  • Joint pain
  • Red eyes

When to get medical care

Call 911This isn't an emergency by itself. Call 911 for trouble breathing, chest pain, or fainting.
Get care todayExposure in pregnancy.
See a doctor soonSymptoms after travel.

Causes

Mosquitoes, sex.

Does it spread or run in families?

  • It usually doesn't spread from person to person.
  • People get it from: mosquito bites, sex, or mother to baby around birth.

Who is more likely to get it

  • Travel

Possible complications

Diagnosis

A clinician asks about your symptoms and may order tests.

The exam

A physical exam.

Tests

Tests, if needed:

  • Blood or urine test:

Treatment

Treatment depends on the cause and how severe it is.

Self-care

  • Rest

Prevention

To lower your risk or catch problems early:

  • Repellent
  • Condoms after travel

Which doctor treats this

  • Start with your primary care provider (family doctor or internist).
  • They may send you to an infectious disease specialist, for hard-to-treat infections.

Children, pregnancy, and older adults

  • Pregnancy: Avoid travel to Zika areas.
  • Pregnant women: Highest concern.

Pregnancy and breastfeeding

  • If you're pregnant or planning to be, tell your prenatal provider about this condition.
  • Some infections can pass to the baby during pregnancy or birth. Tell your provider if you've been exposed.
  • Don't start or stop any medicine on your own. Some are safe in pregnancy and some need to be changed.
  • Ask before taking any pain reliever. The FDA advises avoiding ibuprofen and naproxen after 20 weeks unless your doctor says to.
  • Breastfeeding: Most medicines are fine, but ask. The NIH LactMed database lists what's known about each one.

Outlook

Most recover in a week.

Getting ready for your visit

Bring a list of your symptoms and medicines.

What to bring

  • A list of your medicines and supplements
  • Notes on when symptoms started and what makes them better or worse

Questions to ask

  • What's causing this?
  • What treatment do you recommend?
  • How long should we wait to get pregnant after travel?

Research studies

Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.

Search ClinicalTrials.gov for studies on Zika virus

Sources

Last updated 2026-11-12.