On a recent alert from the National Park Service, they note receiving reports of gastrointestinal illness among >150 private and commercial river rafters and back-country campers during April and May 2022.
Symptoms include nausea, stomach cramping/pain, vomiting, and diarrhea. These symptoms are consistent with norovirus, and we have confirmed norovirus from at least eight rafting trips.
Comprehensive control measures have been implemented, and since early June, there has been a marked decrease in reports of illness.
Norovirus is a highly contagious virus – you can get norovirus from an infected person, contaminated food and water, or by touching contaminated surfaces. Norovirus causes sudden-onset vomiting and diarrhea that lasts 1–3 days. On rafts and in camps, norovirus can spread quickly. The best way to prevent norovirus is to practice proper hand washing and general cleanliness and ensure the safety of your drinking water.
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