Zika Was in Haiti Long Before Brazil Outbreak

Scientists aren't sure exactly what triggered widespread infections in the Americas

From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.webmd.com%2Fnews%2F20160429%2Fzika-virus-was-in-haiti-long-before-brazil-outbreak-study%3Fsrc%3DRSS_PUBLIC&key=ddaed8f51db7bb1330a6f6de768a69b8