EN
An increase in Yersinia enterocolitica human infections has recently been noted. The numerous cases noted in other countries of this bacterium has begun to rival other widespread alimentary tract pathogens. Yersiniosis is a disease diagnosed mainly in humans, but symptoms of infection in numerous domestic and wild species of animals have been observed. Swine are the most important reservoir of human pathogenic Yersinia enterocolitica strains. However, there is evidence that pets can also be carriers of these strains, thus causing the disease in people. Most human pathogenic strains of Yersinia enterocolitica have been derived from puppies and kittens. These animals can be a source of infections, particularly during close contacts with children. Although dogs and cats are not the most important reservoir and source of Yersinia enterocolitica infections, this micro-organism should be included in differential diagnosis of enteritis, especially when its symptoms include bloody diarrhoea in young animals.