Norovirus infection occurs in the stomach and intestines. It is most often call the stomach flu. Outbreaks often occur in areas with close contact such as:

  • Cruise ships
  • Restaurants
  • Nursing homes
  • Hospitals

The Digestive Tract
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These infections are caused by a specific group of viruses. The viruses can spread through:

  • Contaminated water supplies such as recreational lakes, swimming pools, wells, and water stored on cruise ships
  • Raw or improperly steamed shellfish, especially clams and oysters
  • Food and drinks prepared by infected food handlers who either do not wash their hands properly after using the bathroom
  • Surfaces, such as a door knob

The viruses can also spread by direct contact with an ill person. This is common in a daycare center or nursing home.