Certain types of birth defects can go unseen and permanently harm a baby or lead to death. Nervous system or brain problems lead to learning disabilities, mental retardation, behavioral disorders, speech or language difficulties, convulsions, and movement trouble. Sensory problems can cause blindness, cataracts, and other visual problems along with varying degrees of hearing loss including deafness. Structural defects are related to a problem with a body part such as cleft lip, cleft palate, and spina bifida ("Birth Defects: Learn About the Causes", 2017). Microcephaly is one of many Zika-associated birth defects. This virus can replicate and persist in a fetal brain (Henry,
