Zika is a virus passed to humans by the bite of infected mosquitoes. Symptoms include fever, joint pain, rash, and red eyes (conjunctivitis).
For the most up-to-date information, please visit the Centers for Disease Control and Prevention's (CDC) website at -- www.cdc.gov/zika.
Zika virus infection; Zika virus; Zika
The Zika virus is named after the Zika forest in Uganda, where the virus was first discovered in 1947.
HOW ZIKA CAN SPREAD
Mosquitoes spread the Zika virus from person to person.
- Mosquitoes acquire the virus when they feed on infected people. They then spread the virus when they bite other people.
- The mosquitoes that spread Zika are the same type that spread dengue fever and chikungunya virus. These mosquitoes usually feed during the day.
Zika can be passed from a mother to her baby.
- This can happen in the uterus or at the time of birth.
- Zika has not been found to spread through breastfeeding.
The virus can be spread through sex.
- People with Zika can spread the disease to their sex partners before symptoms begin, while they have symptoms, and after symptoms end.
- The virus can also be passed during sex by people with Zika who never develop symptoms.
- No one knows how long Zika remains in sperm and vaginal fluids, or how long it can be spread during sex.
- The virus remains in semen longer than in other body fluids (blood, urine, vaginal fluids).
Zika can also be spread through:
- Blood transfusion
- Exposure in a laboratory
WHERE ZIKA IS FOUND
Before 2015, the virus was found mainly in Africa, Southeast Asia, and the Pacific Islands. In May 2015, the virus was discovered for the first time in Brazil.
It has now spread to many territories, states, and countries in:
- Caribbean Islands
- Central America
- South America
- Pacific Islands
The virus was confirmed in Puerto Rico, American Samoa, and United States Virgin Islands.
The disease has been found in travelers coming to the United States from affected areas. Zika has also been discovered in one area in Florida, where the virus is being spread by mosquitoes.