Questions Emerge About Data Used by China to Defend Against Doping Allegations

China and the World Anti-Doping Agency say that positive tests for a banned drug among elite Chinese swimmers were a result of unwitting contamination. But the science behind that assertion is not so clear.

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Antidoping Agency Froze Out Investigators Who Warned About China

The World Anti-Doping Agency’s investigative unit highlighted intelligence about Chinese athletes possibly using a banned medication, but were kept out of the loop when 23 swimmers tested positive for it.

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