The outbreak of Zika, a mosquito - borne disease, was detected last year in Brazil, where it has been linked to more than 1,700 cases of microcephaly, a birth defect marked by small head size that can lead to severe developmental problems. (businessinsider.com)
intrauterine growth retardation (also known as fetal growth restriction) that affects brain growth in utero, resulting in a very small head size at birth (aboutkidshealth.ca)
Although Zika infections typically cause only mild symptoms, concerns have been heightened by Brazil's reports of an unusual increase in microcephaly — unusually small head size — in babies born in areas where the virus is circulating. (paho.org)