Why Were There Fewer Microcephaly Cases from Zika Last Year?

March 30, 2017

(STAT News) – Of the many mysteries that remain about the Zika virus and its attack on the Americas, perhaps the most puzzling one relates to the bizarre distribution of babies born with Zika-induced microcephaly. After so many such births were recorded in Northeastern Brazil in the last quarter of 2015, the country — and other places where the virus fanned out to from Brazil — braced themselves for a similar tsunami in 2016. But it didn’t materialize — at least not to the same degree.