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  • Asia outbreaks prompt question – Is all Zika dangerous?

    Reuters - 11/23/2016

    Experts believe Zika moved explosively in the Americas because there was no prior exposure. It’s not clear how widely Zika has circulated in Africa and Asia, whether there could be pockets of natural immunity – and, importantly, whether immunity to one strain would confer immunity to another.

    One recent review of studies suggests 15 to 40 percent of the population in some African and Asian countries may have been previously infected with Zika, said Alessandro Vespignani, a professor of health sciences at Northeastern University in Boston.

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