Find info on norovirus symptoms, causes, prevention, current outbreaks, and reporting systems.

Norovirus is a very contagious virus that causes vomiting and diarrhea. It is sometimes called the "stomach flu" or the "stomach bug." However, norovirus illness is not related to the flu. The flu is caused by the influenza virus. Norovirus causes acute gastroenteritis, an inflammation of the stomach or intestines.

Jan 2, 2025 · CDC works closely with our federal regulatory partners on norovirus outbreak investigations. The following are current food safety advisories or product recalls. Shellfish potentially contaminated with norovirus:

May 8, 2024 · Norovirus is the leading cause of vomiting and diarrhea from acute gastroenteritis among people of all ages in the United States. Each year, there are about 2,500 reported norovirus outbreaks in the United States. Norovirus causes 58% of foodborne illnesses acquired in the United States.

Jan 13, 2025 · Norovirus is very contagious, but you can take steps to stop it from spreading. Wash hands well with soap and water; hand sanitizer alone does not work well against norovirus. Do not prepare, handle food, or care for others when you are sick.

Apr 24, 2024 · Norovirus is very contagious; it spreads very easily and quickly. You can get norovirus from sick people and through contaminated food, water, or surfaces. You are most contagious when you have symptoms of norovirus illness or …

CDC provides information on infection control and clinical safety to help reduce the risk of infections among healthcare workers, patients, and visitors. View All

If norovirus infection is suspected, adherence to PPE use according to Contact and Standard Precautions is recommended for individuals entering the patient care area (i.e., gowns and gloves upon entry).

Sep 20, 2024 · Data on suspected and confirmed norovirus outbreaks reported to CDC by participating state health departments are updated monthly. NoroSTAT data is used to assess current and past norovirus activity and impact of future norovirus genotypes.

Norovirus infections can occur year round, but in temperate climates, activity peaks during the winter. Noroviruses are common in low-, middle-, and high-income countries. Globally, norovirus causes ≈18% of acute gastroenteritis cases and could be …