With concern of a possible connection between Zika virus and microcephaly in Brazilian babies, researchers are racing to fill in the many blanks about the virus in order to better control it. But predicting the future of Zika virus in the Americas is fraught with difficulties. The behavior of closely related, recently introduced viruses offers clues. But despite similarities, the differences are many and prevent sweeping generalities. Though not reassuring to couples contemplating starting a family right now, it is this uncertainty that makes these viruses so fascinating.
Zika Virus and What We Can Learn from Related Viruses
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