Zika cases are down, but researchers prepare for the virus’s return
Plenty of questions remain about transmission and vaccine development
ZIKA'S IMPRINT Zika’s spread through the Americas, with the associated birth defects and other maladies, was one of the top stories last year. It remained an important science story in 2017.
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One of the top stories of 2016 quietly exited much of the public’s consciousness in 2017.