Epidemiology of Zika Virus. David S. Younger. Neurol Clin 2016; 34:1049-1056.

Zika virus is a Flaviviridae arbovirus transmitted by Aedes mosquitoes and through inter-human contact. There is neither a vaccine nor prophylactic medications available to prevent infection. The risk to the unborn fetus occurs throughout gestation with the most serious consequences in the first trimester.