Dozens of Hikers Became Ill During Trips to Waterfalls Near Grand Canyon

Dozens of Hikers Became Ill During Trips to Waterfalls Near Grand Canyon
Mooney Falls on the Havasupai reservation outside the village of Supai, Ariz., on May 19, 2024. Randy Shannon via AP
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Dozens of hikers say they fell ill during trips to a popular Arizona tourist destination that features towering blue-green waterfalls deep in a gorge neighboring Grand Canyon National Park.

Madelyn Melchiors, a 32-year-old veterinarian from Kingman, Arizona, said she was vomiting severely Monday evening and had a fever that endured for days after camping on the Havasupai reservation.