Norovirus
10 Brote ActivosNorovirus is a highly contagious virus that causes acute gastroenteritis, inflammation of the stomach and intestines. Often called the 'stomach flu' or 'winter vomiting bug,' it is the leading cause of foodborne illness outbreaks worldwide.
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¿Qué es Norovirus?
Norovirus is the leading cause of vomiting and diarrhea from acute gastroenteritis in the United States and globally. It causes approximately 21 million illnesses, 70,000 hospitalizations, and 800 deaths annually in the U.S. alone. The virus is extremely contagious - just a few viral particles can cause infection, and infected people can shed billions of virus particles.
SÃntomas
- Sudden onset of nausea and vomiting
- Watery diarrhea
- Stomach cramps and abdominal pain
- Low-grade fever
- Body aches and headache
- Fatigue and weakness
Transmisión
Norovirus spreads through contaminated food or water, contact with contaminated surfaces, and direct person-to-person contact. The virus is extremely contagious and only a few viral particles are needed to cause infection. Outbreaks are common in closed environments like cruise ships, schools, and nursing homes.
PerÃodo de Contagio: From symptom onset through at least 3 days after recovery (virus can be shed up to 2 weeks)
Prevención
- Thorough handwashing with soap and water (alcohol sanitizers less effective)
- Wash fruits and vegetables before eating
- Cook shellfish thoroughly
- Clean and disinfect contaminated surfaces with bleach-based cleaners
- Stay home when sick and for 48 hours after symptoms resolve
- Avoid preparing food for others when ill
- Wash laundry thoroughly if contaminated
Live Norovirus Global Case Map
5 countries with reported activity. Updated from real-time surveillance data.
Brotes Activos y Casos Recientes
Inteligencia en tiempo real de monitoreo global de salud y vigilancia impulsada por IA
Fuentes de datos: BEACON, ProMED, OMS, CDC y más de 50 agencias nacionales de salud
✓ Datos en vivo actualizados en tiempo real desde fuentes de salud globales
France allows asymptomatic passengers off new cruise ship struck by stomach bug outbreak
BORDEAUX, France -- Passengers unaffected by an illness outbreak on a British cruise ship have been allowed off the ship in the French port city of Bordeaux, while authorities confirmed the cause of the outbreak is norovirus, a nasty stomach bug that spreads easily. French authorities had initially ordered over 1,700 passengers and crew on The Ambition cruise ship to remain on board, but then decided late Wednesday to let those unaffected disembark. One passenger was spotted raising his arms in triumph while leaving the vessel. It was not immediately clear how many left the ship, but the British operator of the ship said Thursday that passengers are able to disembark "with all scheduled shore excursions operating as planned today." As of Thursday morning, 60 passengers and four crew member...
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Dozens of hikers suddenly fall sick on California section of iconic Pacific Crest Trail
Roughly a dozen hikers have reportedly fallen ill with a nasty stomach bug after traversing a section of the scenic Pacific Crest Trail.
The popular hiking destination spans more than 2,600 miles and goes from Mexico to Canada through California, Oregon and Washington.
The Pacific Crest Trail Association acknowledged reports of "gastrointestinal illness" in the Wrightwood area of the hike, writing in an Instagram post on Thursday that they are working with the San Bernardino County Department o
📰 19 news sources reporting on this story.
What Is 'Vomiting Virus' Spreading Across US; Symptoms, Causes And Prevention, All You Need To Know
Norovirus cases are sharply rising acrossUS, CDC data and wastewater show massive spread, officials urge hygiene, handwashing and staying home to prevent dehydration and outbreaks
A highly contagious stomach virus commonly known as the "vomit bug" is spreading across the United States, with health officials reporting a sharp rise in norovirus activity in several regions of the country.
Norovirus is the leading cause of foodborne illness in the US and is responsible for millions of cases of acut
📰 11 news sources reporting on this story.
Demand for cruises appears undimmed despite hantavirus and other onboard outbreaks
Recent outbreaks of hantavirus and norovirus on cruise ships are making headlines, but they're unlikely to dim the growing popularity of vacation cruises, according to industry representatives and travel experts.
In fact, many within the industry still expect a record number of people worldwide to take cruises this year despite three passengers aboard the MV Hondius dying from hantavirus after the ship stopped in Argentina and a recent norovirus outbreak aboard a British ship docked in Bordeaux,
📰 22 news sources reporting on this story.
Norovirus on cruise ships: Why soap and water still matter -- Dr Muhammad Amir Yunus
MAY 26 -- When news emerged of a norovirus outbreak aboard the Caribbean Princess cruise ship recently, many Malaysians may not have paid much attention to it. Stomach bugs during travel are often assumed to be routine food poisoning or a minor inconvenience that passes after a day or two.
But the outbreak, which affected more than 100 passengers and crew members, serves as a useful reminder that not all gastrointestinal infections behave the same way, and not all can be prevented using the habi
📰 11 news sources reporting on this story.
Cruise ship faces second norovirus outbreak in a month, 20 people sick - AOL
Nearly two dozen people got sick with norovirus onboard a National Geographic-Lindblad Expeditions ship, marking the vessel's second outbreak in roughly a month.
Among the 68 guests sailing on National Geographic Sea Bird, 19 reported being ill during a voyage that ended on June 30, along with one crew member, according to the Centers for Disease Control and Prevention. Their main symptoms were diarrhea and vomiting.
The ship is currently operating Alaska voyages, according to CruiseMapper.
Th
📰 79 news sources reporting on this story.
Nearly 20 guests sick in cruise ship's third GI outbreak in two months
The CDC is investigating a third gastrointestinal illness outbreak aboard a National Geographic cruise ship.
Nearly 20 people got sick with gastrointestinal illness on a National Geographic-Lindblad Expeditions ship, marking the vessel's third outbreak in less than two months.
Among the 62 guests onboard, 18 reported being ill during the National Geographic Sea Bird's July 10 voyage, according to the Centers for Disease Control and Prevention. Their main symptoms were abdominal cramps and vomit
Norovirus Hits Pacific Crest Trail Hikers: Information Sought
This event envelope contains reports on norovirus outbreaks in the USA.
Source: BEACON - View Full Report
Norovirus, Panama
This event envelope includes reports on norovirus gastroenteritis outbreaks in Panama.
Source: BEACON - View Full Report
Norovirus, Germany
This event envelope contains reports on norovirus outbreaks in Germany.
Source: BEACON - View Full Report
Don't find out from the news. Track this outbreak and 200+ diseases in real time.
Recursos Expertos y Referencias
Información confiable de las principales organizaciones de salud
CDC
Orientación oficial de los Centros para el Control y la Prevención de Enfermedades de EE. UU.
Ver Recursos del CDC →WHO
Vigilancia global de enfermedades y directrices de la Organización Mundial de la Salud
Ver Recursos de la OMS →Investigación
Últimas investigaciones revisadas por pares y estudios clÃnicos
Ver Investigación →Contenido Revisado Médicamente
La información sobre enfermedades en Virus Watcher es revisada por nuestro Epidemiólogo Jefe, ex analista principal del CDC para el pronóstico FluSight. Los datos de brotes se agregan de fuentes verificadas incluyendo BEACON, ProMED, OMS, CDC y más de 50 agencias nacionales de salud. Esta información es con fines educativos y no debe reemplazar el asesoramiento médico profesional.
Última revisión: 2026-08-13
Preguntas Frecuentes
Preguntas frecuentes sobre Norovirus respondidas por nuestro equipo de epidemiologÃa
Enfermedades Relacionadas
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AnticÃpese a las Norovirus Brotes
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