In seven countries that recently experienced Zika outbreaks, there were also sharp increases in the numbers of people suffering from a form of temporary paralysis, researchers reported Wednesday. The analysis, published online in The New England Journal of Medicine, adds to substantial evidence that Zika infections —

even asymptomatic ones — may bring on a paralysis called Guillain-Barré syndrome. The syndrome can be caused by a number of other factors, including infection with other viruses. Researchers studying the Zika epidemic in French Polynesia had estimated that roughly 1 in 4,000 people infected with the virus could develop the syndrome. READ MORE


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