These strains are called serotypes because they can be distinguished by serological agglutination tests. It is the most common type of influenza outbreaks in humans. Rotaviruses belong to the group of the reovirus. They are 70 nm in diameter and resemble wheels with a central axel and radiating spokes. Rotaviruses are the major agent of non-bacterial diarrhoeal diseases with great risk to infants and young children.
Transmission occurs commonly through water.
Canine parvovirus causes enteritis and miocarditis in dogs. Some entero viruses Infection occurs through faecal contamination of food, water and air. Personal hygiene, communal hygiene such as sewage treatment and isolation of diseased persons from food processing are the most important measures to avoid food born diseases. The contamination can be of primary or secondary nature. The primary contamination of food occurs when the animal which is going to be killed has already a virus disease.