A baby born with microcephaly reacts to stimulus during an evaluation session with a physiotherapist at the Altino Ventura rehabilitation center in Recife, Brazil on January 28, 2016.

A baby born with microcephaly reacts to stimulus during an evaluation session with a physiotherapist at the Altino Ventura rehabilitation center in Recife, Brazil on January 28, 2016.

Credit:

Ueslei Marcelino/Reuters

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