Individuals may also become infected by eating or drinking contaminated foods or beverages. Food may be contaminated by food preparers or handlers who have viral gastroenteritis, especially if they do not wash their hands regularly after using the bathroom or changing diapers. Shellfish may be contaminated by sewage. Persons who eat raw or undercooked shellfish harvested from contaminated waters may get diarrhea. Drinking water can also be contaminated by sewage and be a source of the spread of these viruses.
Viral gastroenteritis affects people in all parts of the world.
Each virus has its own seasonal activity. Viral gastroenteritis outbreaks can occur in institutional settings such as schools, child care facilities, and nursing homes and can occur in other group settings, such as banquet halls, cruise ships, dormitories and campgrounds. Anyone can get it. Viral gastroenteritis occurs in people of all ages and backgrounds. However, some viruses tend to cause diarrheal disease primarily among people in specific age groups.