The year was 1947. Scientists had isolated a virus from a pyrexial rhesus monkey in Uganda, and named it after the forest where the monkey lived—Zika.

Then, a little more than a year ago, in the fall of 2015, health officials in Brazil reported a sharp increase in the number of cases of exceptionally small brains (microcephaly) in human newborns. These cases were connected to infections with the Zika virus.

So what happened during that 70-year gap, and why did most of us feel so blindsided by Zika?
A rhesus monkey..
Several reasons can help account for those years, including recent findings… more


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