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Mystery illness killing chimpanzees for years may finally be solved by scientists
animals showed neurological symptoms like lack of coordination and seizures, while also gripped with distended abdomens and vomiting indicating gastrointestinal distress. "It was not subtle — the chimpanzees would stagger and stumble, vomit, and have diarrhoea," Tony Goldberg, an epidemiologist and veterinarian at the University of Wisconsin, Madison, told Science."Sometimes they'd go to bed healthy and be dead in the morning."Desperate staff tried to nurse the sick chimps back to health, but soon realised it had a mortality rate of 100%.