Zika virus is spread to people through mosquito bites. First case of transmission trough sexual intercourse has been recorded in the USA.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.
In May 2015, the Pan American Health Organization (PAHO) issued an alert regarding the first confirmed Zika virus infection in Brazil. The outbreak in Brazil led to reports of Guillain-Barré syndrome and pregnant women giving birth to babies with birth defects and poor pregnancy outcomes.
In response, CDC has issued travel notices for people traveling to regions and certain countries where Zika virus transmission is ongoing.
- About 1 in 5 people infected with Zika virus become ill (i.e., develop Zika).
- The most common symptoms of Zika are fever, rash, joint pain, or conjunctivitis (red eyes). Other common symptoms include muscle pain and headache. The incubation period (the time from exposure to symptoms) for Zika virus disease is not known, but is likely to be a few days to a week.
- The illness is usually mild with symptoms lasting for several days to a week.
- Zika virus usually remains in the blood of an infected person for a few days but it can be found longer in some people.
- Severe disease requiring hospitalization is uncommon.
- Deaths are rare.
- The symptoms of Zika are similar to those of dengue and chikungunya(http://www.cdc.gov/chikungunya/index.html), diseases spread through the same mosquitoes that transmit Zika.
- See your healthcare provider if you develop the symptoms described above and have visited an area where Zika is found.
- If you have recently traveled, tell your healthcare provider when and where you traveled.
- Your healthcare provider may order blood tests to look for Zika or other similar viruses like dengue or chikungunya.
- No vaccine or medications are available to prevent or treat Zika infections.
- Treat the symptoms:
- Get plenty of rest.
- Drink fluids to prevent dehydration.
- Take medicine such as acetaminophen to relieve fever and pain.
- Do not take aspirin and other non-steroidal anti-inflammatory drugs (NSAIDs), like ibuprofen and naproxen. Aspirin and NSAIDs should be avoided until dengue can be ruled out to reduce the risk of hemorrhage (bleeding). If you are taking medicine for another medical condition, talk to your healthcare provider before taking additional medication.
- If you have Zika, prevent mosquito bites[PDF – 2 pages](http://www.cdc.gov/chikungunya/pdfs/fs_mosquito_bite_prevention_travelers.pdf) for the first week of your illness.
- During the first week of infection, Zika virus can be found in the blood and passed from an infected person to another mosquito through mosquito bites.
- An infected mosquito can then spread the virus to other people.
Areas with Zika
Symptoms, Diagnosis, & Treatment
Vector Surveillance and Control
For Health Care Providers
Zika Virus Disease Q & A
For Pregnant Women
Fact Sheets and Posters
Resources & Publications
State Public Health Laboratories
Countries and territories with active Zika virus transmission
- Areas with Zika(http://www.cdc.gov/zika/geo/index.html)
- Zika virus will continue to spread and it will be difficult to determine how the virus will spread over time.
- Zika Virus Disease Q & A(http://www.cdc.gov/zika/disease-qa.html)
- Interim Guidelines for the Evaluation and Testing of Infants with Possible Congenital Zika Virus Infection – United States, 2016
- Questions and Answers for Pediatric Healthcare Providers: Infants and Zika Virus Infection(http://www.cdc.gov/zika/hc-providers/qa-pediatrician.html)
- Interim Guidelines for Pregnant Women During a Zika Virus Outbreak
- CDC Health Alert Network advisory for Zika virus
- Travelers’ Health: Practice enhanced precautions(http://www.cdc.gov/zika/pregnancy/travel-health-notices.html)
- Zika and pregnancy(http://www.cdc.gov/zika/pregnancy/index.html)