How Zika spreads
Zika can be transmitted through
- Mosquito bites
- From a pregnant woman to her fetus
- Blood transfusion (very likely but not confirmed)
Many people infected with Zika virus won’t have symptoms or will only have mild symptoms. The most common symptoms of Zika are
- Joint pain
- Conjunctivitis (red eyes)
Other symptoms include:
- Muscle pain
Symptoms can last for several days to a week. People usually don’t get sick enough to go to the hospital, and they very rarely die of Zika. Once a person has been infected with Zika, they are likely to be protected from future infections.
Why Zika is risky for some people
Zika infection during pregnancy can cause a birth defect of the brain called microcephaly and other severe fetal brain defects. Other problems have been detected among fetuses and infants infected with Zika virus before birth, such as defects of the eye, hearing deficits, and impaired growth. There have also been increased reports of Guillain-Barré syndrome, an uncommon sickness of the nervous system, in areas affected by Zika.