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Polluted water, Zika and superbugs are three of the major health concerns at the Rio Olympics.
Polluted water, Zika and superbugs are three of the major health concerns at the Rio Olympics.

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    Zika, Superbug, Sewage: Is Rio ready for 2016 Olympics?

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Zika, Superbug, Sewage: Is Rio ready for 2016 Olympics?

Athletes could be exposed to dangerous bacteria coming from local sewage and trash in Brazil's waters. CNN's Sanjay Gupta reports.

Zika, Superbug, Sewage: Is Rio ready for 2016 Olympics?

Athletes could be exposed to dangerous bacteria coming from local sewage and trash in Brazil's waters. CNN's Sanjay Gupta reports.