Why the Olympics won't spread Zika around the world
The opening ceremonies of the 2016 Olympics in Rio de Janeiro are just days away. But this year, fears of Zika have cast a shadow over festivities.

The Zika virus is the cause of an ongoing epidemic of birth defects first noticed in Brazil in late 2015. While the virus causes no symptoms in most people, infections of pregnant women can lead to microcephaly, blindness, spontaneous abortion or stillbirth of the fetus. Now affecting nearly all Latin American and Caribbean countries, the Zika outbreak has been declared a public health emergency of international concern by the World Health Organization (WHO).

As scientists and health agencies race to keep up with the epidemic, it’s no surprise that the threat of Zika during the Olympics has been in the news.

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