Facts You Didn’t Know About ZIKA Virus

6. Officials say symptoms of Zika in adults are generally mild, and can include a slight fever, rash, red eyes, headache and joint pain in the hands and feet. As such, they’re not necessarily symptoms that most people would go get checked out.  Zika virus infection during pregnancy can cause a serious birth defect called microcephaly, as well as other severe fetal brain defects.