Shenandoah National Park warns of ‘severe’ norovirus outbreak on Appalachian Trail

northThe orovirus returns to circulate through the AT. Since early May 2026, ATC has published several Trail Alerts regarding reports of “norovirus and gastrointestinal illness” along the trail in Virginia, and the most recent update points to a popular cabin within Shenandoah National Park.

The first ATC alert detailed gastrointestinal illnesses around Virginia’s Triple Crown (NOBO miles 697.5 to 731.1) and along the Blue Ridge Parkway to Rockfish Gap (NOBO miles 823.9 to 865.1). The second update tracked suspected norovirus between Buena Vista and Waynesboro, VA (NOBO miles 809.8 to 865.3). Most recently, on June 15, ATC reported a suspected case of norovirus in Shenandoah National Park at Blackrock Hut (NOBO mile 885.8).

On June 17, Shenandoah National Park posted on its facebook page stating that «There have been reports of serious illness on the Appalachian Trail (AT). Norovirus is suspected to be the cause and is very contagious.» While Blackrock Hut was not specifically named in the post, hikers should use caution when visiting the iconic hut. The shelter remains open at this time, but visitors should use caution as norovirus is highly contagious.

Norovirus symptoms

Norovirus spreads by ingesting particles of feces or vomit. While it’s gross to think about, it is extremely contagious and occurs most often when someone comes into contact with an infected person, contaminated water or food, or a contaminated surface. This exposure causes the stomach and/or intestines to become inflamed.

The classic symptoms of norovirus are stomach pain, nausea, vomiting and diarrhea. In it crossingMany hikers become dehydrated due to constant vomiting and diarrhea. This can be life-threatening, and in extreme cases, hikers have reported becoming so weakened that they require emergency evacuation.

Norovirus prevention

People infected with norovirus release billions of contagious particles that have the potential to make other people sick. Norovirus has an incubation period of 12 to 48 hours and lasts 24 to 60 hours. Even after symptoms subside, a person can be contagious for three days to two weeks.

Unfortunately, norovirus often spreads in communal areas such as shelters and shelters. It is important to stay alert and protect yourself from contamination.

Wash your hands with soap and water

Many hikers choose to carry hand sanitizer for personal hygiene, but hand sanitizer does not disinfect against the virus! Washing your hands with biodegradable soap and water for at least 20 seconds allows norovirus particles to rinse from your hands, reducing potential contamination. Hand washing should be done before eating and after using the bathroom.

Treat your water

Most hikers use water filters as their only form of filtration. Popular filters protect against bacteria and protozoa, but cannot filter viruses. Boiling water for at least one minute is the best way to treat water.

Properly dispose of waste

Hikers must practice. leave no trace when using the bathroom in the field. When it comes to defecating in the woods, cat holes should be dug 200 feet away from water, campsites, and shelters, and be at least 6 to 8 inches deep. Bury only poop and toilet paper.

Do not share food, drinks or utensils

Sharing is not always caring. Since norovirus is extremely contagious, it is best to limit potential contamination by not eating or drinking after others. If you have to touch someone else’s things, make sure you wash your hands afterward.

Other norovirus outbreaks and monitoring

Every year, norovirus affects the hiking community and long trails. This year alone, the PCT experienced an outbreak that made headlines, with more than two dozen hikers reporting debilitating symptoms.

Read next: Everything you need to know about the PCT norovirus outbreak

If you or someone you are walking with starts to show symptoms, it is recommended to isolate yourself while you are sick and for at least two to three days after symptoms disappear. Consider seeking medical treatment if you become dehydrated or if symptoms last more than a few days.

The ATC asks hikers to report illnesses along the trail. This self-reporting helps health officials and trail managers track outbreaks and ensure lodges are properly disinfected. Reports can be emailed to (email protected).

Cover image: ZEN

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