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   Is the Grand Canyon at risk for gastroenteritis?

   • On May 11, 2022, the National Park Service (NPS) Office of Public Health (OPH) and Coconino County Health and Human Services (CCHHS) in Flagstaff, Arizona contacted CDC about a rising number of acute gastroenteritis cases among backcountry visitors to Grand Canyon National Park (Grand Canyon).

   Outbreak of Acute Gastroenteritis Among Rafters and Backpackers

   www.cdc.gov/mmwr/volumes/71/wr/mm7138a2.htm

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   Did rafting in the Grand Canyon cause gastroenteritis?

   • † On April 8, 2022, OPH was notified by a commercially operated rafting group within Grand Canyon of seven persons experiencing vomiting or diarrhea. After nine additional rafting trips (173 rafters), multiple cases of acute gastroenteritis were reported. OPH and CCHHS contacted CDC on May 11, 2022.

   Outbreak of Acute Gastroenteritis Among Rafters and Backpackers

   www.cdc.gov/mmwr/volumes/71/wr/mm7138a2.htm

   See all results for this question

   What is the largest outbreak of gastroenteritis in the Grand Canyon?

   • During April 1–June 17, 2022, the largest outbreak of acute gastroenteritis documented in the Grand Canyon National Park backcountry occurred. At least 222 rafters and backpackers became infected, probably with norovirus.

   Outbreak of Acute Gastroenteritis Among Rafters and Backpackers

   www.cdc.gov/mmwr/volumes/71/wr/mm7138a2.htm

   See all results for this question

2. www.cdc.gov › mmwr › volumesOutbreak of Acute Gastroenteritis Among Rafters and ...

   www.cdc.gov › mmwr › volumes

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   Sep 22, 2022 · A large norovirus-associated outbreak of acute gastroenteritis occurred in the Grand Canyon backcountry among river rafters and backpackers during April–June 2022. Preliminary analyses of illness characteristics and portable toilet specimen test results suggested norovirus as the primary causative agent of illness.

3. arstechnica.com › science › 2022People are getting explosive gastroenteritis at the Grand Canyon

   arstechnica.com › science › 2022

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   Jun 28, 2022 · But the park service warns that the highly infectious virus can swiftly rip through river tours and campsites. It can spread from person to person directly, through contaminated food and water, or ...

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5. journals.sagepub.com › doi › 10Acute Gastroenteritis Outbreak Among Colorado River Rafters ...

   journals.sagepub.com › doi › 10

   Apr 13, 2024 · Grand Canyon rafters and backpackers were surveyed online from June 13–July 8, 2022, and a Cox proportional hazards model was used to identify predictors associated with illness and adjusted for potential confounding factors. Results. Among 762 surveys, 119 cases and 505 well persons submitted complete survey data.

6. www.businessinsider.com › grand-canyon-norovirusGrand Canyon Norovirus Outbreak: Campers Vomiting With Diarrhea

   www.businessinsider.com › grand-canyon-norovirus

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   Jul 1, 2022 · Backcountry campers and river rafters at the Grand Canyon have reported outbreaks of gastrointestinal illness. At least 150 visitors to the national park showed symptoms of norovirus,...

7. www.upr.org › utah-news › 2022/09/27Raft trips hit hard by the Grand Canyon’s largest recorded ...

   www.upr.org › utah-news › 2022/09/27

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   Sep 27, 2022 · They had all of the telltale signs of a norovirus infection — nausea, vomiting, diarrhea. “After Patient Zero, it was one to two people a day going down,” King said. Their worst day was when the group ran Upset Rapid, a huge, roiling whitewater rapid right in the middle of the canyon.

8. rrfw.org › RGCwiki › imagesAvoiding and Managing Norovirus on a Grand Canyon

   rrfw.org › RGCwiki › images

   Grand Canyon River Trip By Marc Hunt Norovirus (Norwalk Virus) is a particularly harsh gastro intestinal infection that is very highly contagious. A Norovirus outbreak on a Grand Canyon river trip can be debilitating, and several members of the trip can suffer it simultaneously. Waves of n orovirus outbreaks

9. journals.sagepub.com › doi › fullNorovirus Outbreaks Among Colorado River Rafters in the Grand ...

   journals.sagepub.com › doi › full

   Sep 1, 2015 · To investigate the incidence and causative agent of the recurrent outbreaks of acute gastrointestinal illness (AGI) among different rafting groups on the Colorado River in the Grand Canyon National Park during the 2012 summer season. Methods.