Woman airlifted out of the Grand Canyon as dozens of hikers get sick from unnamed illness

• Dozens of people got sick this month at Havasupai Falls in Grand Canyon National Park.
• Tourists experienced vomiting, diarrhea, and fever symptoms.
• Officials said people in the northern Arizona region are experiencing "a gastrointestinal illness."

Dozens of tourists who hiked to a waterfall in the Grand Canyon have fallen ill, including one woman who had to be airlifted out of the national park.