What real threat does Zika pose to the Rio Olympics? History has an answer - CNN

CNN
What real threat does Zika pose to the Rio Olympics? History has an answer
CNN
(CNN) Well before the Zika epidemic began in Brazil last year, Olympics organizers knew they would face a challenge in keeping the approximately 16,000 athletes and 600,000 visitors to Rio de Janiero healthy. Mass gatherings are always associated with ...
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