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Why the US cyclospora outbreak is difficult to trace

Why the US cyclospora outbreak is difficult to trace
Photo: FOX 11 Los Angeles (KTTV) · view original

Federal investigators say the cyclospora parasite behind the suspected illnesses of thousands of Americans has been unusually difficult to trace. Experts say it does not leave behind any culturable samples and no genetic fingerprints, which forces officials to rely almost exclusively on patient i...

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