What is the most common cause of norovirus outbreaks?

The most common cause of norovirus outbreaks is infected handlers. Norovirus is highly contagious and can easily spread from person to person, especially in environments where food is prepared or served. When food handlers who are infected with norovirus handle food without proper hygiene practices, they can contaminate the food, leading to outbreaks. This is particularly concerning in settings such as restaurants, cafes, and catering services where a large number of people can be affected by a single source of contamination.

Although improperly washed vegetables, contaminated water supplies, and undercooked meat can also contribute to foodborne illnesses, norovirus specifically has a strong association with food being contaminated by individuals who are ill and fail to maintain good sanitation practices. Proper handwashing and food safety measures are essential in preventing the spread of this virus in food preparation settings.