Doctors confirmed the link between the Zika virus and microcephaly in April. While the most visible sign of microcephaly is the small size of the head, its actually inside the brain where the most damage occurs.
Up next in Zika
How the Zika virus affects an infant's brain
Behind the scenes of the Zika vaccine trials
Indonesia hopes to guard against Zika virus with airport larvae traps
NIH Director on Zika funding: "We ran out of money."
Listen to a rap song about Zika prevention
Fla. Gov. Scott: Dump standing water to prevent spread of Zika after Hermine