Zika virus infection during pregnancy is now known to cause congenital microcephaly and severe brain defects. In 2016, rates of microcephaly appeared to start increasing around May, peaking in July, and declining through December. The occurrence of microcephaly appears to have increased nearly 4-fold in 2 large cities in Colombia, concurrently with the reported Zika virus epidemic in the country.
From the *Pontificia Universidad Javeriana Cali; †Congenital Malformations Surveillance Programme of Bogotá, Pontificia Universidad Javeriana Bogotá; ‡Congenital Birth Defects Surveillance Programme of Cali, Pontificia Universidad Javeriana Cali; §Secretaria de Salud de Bogotá, Congenital Malformations Surveillance Programme of Bogotá, Pontificia Universidad Javeriana Bogotá; ¶Secretaria de Salud de Bogotá; ‖Secretaria de Salud Pública Municipal de Cali; and **Hospital Universitario San Ignacio, Pontificia Universidad Javeriana Bogotá.
Accepted for publication April 29, 2017.
The authors have no funding or conflicts of interest to disclose.
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Address for correspondence: Ignacio Zarante, MD, PhD, Instituto de Genetica Humana, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana Bogotá, Cra 7 #40–62 Edificio 31, Bogota, Colombia. E-mail: firstname.lastname@example.org