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Associated Press
Triathlon athlete Erin Jones, of the U.S., smiles as fellow swimmer Kevin Mcdowell stand behind after they gave a swimming clinic to local swimmers along Copacabana beach in Rio de Janeiro, Brazil, Monday, Aug. 3, 2015. Triathletes swam in waters off Copacabana Beach despite published warnings that water in the area was "unfit" for swimming. On Thursday, The Associated Press released the results of a five-month investigation that showed that Olympic venues are rife with disease-causing viruses and bacteria. (AP Photo/Leo Correa)

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