Zika virus: 2.2 billion people in 'at risk' areas
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More than two billion people live in parts of the world where the Zika virus can spread, detailed maps published in the journal eLife show. The Zika virus, which is spread by Aedes aegypti mosquitoes, triggered a global health emergency this year. Last week the US Centers for Disease Control and Prevention confirmed that the virus causes severe birth defects. The latest research...