What is Zika Syndrome? Congenital Zika Syndrome (CZS) is a group of birth defects associated with Zika infection during pregnancy. Zika is a virus. If a woman should get infected with Zika during pregnancy, the virus can pass through the placenta to the baby.
Some of the abnormalities seen with CZS include: severe microcephaly, decreased brain tissue, congenital contractures and damage to the back of the eye.