Zika crisis is unpredictable
A baby born with microcephaly undergoes physical therapy in Brazil on Feb. 25, 2016.(Photo: Andre Penner, AP)
Since Zika shot to worldwide attention in January, the once obscure
mosquito-borne virus has done nothing but surprise. Long thought to
cause only mild illness, Zika is now believed to trigger a devastating
birth defect and has been linked to serious neurological diseases in
adults. It can spread not only by mosquito bites but also by sexual
activity.
