Prevailence of Yersinia enterocolitica in milk and faeces of some lactating animals and typing of the obtained isolates by plasmid profile [electronic resource].

Includes references.

Yersinia enterocolitica gastroenteritis in humans have been recognized with increasing frequency in recent years. One hundred and eighty random samples of milk and faeces of lactating cows, ewes and goats (60 each) constituting 30 milk samples and 30 faecal specimens were aseptically collected from different districts in Assiut governorate in the period from May to August 2001. These samples were examined for Y enterocolitica isolation and typing of the obtained isolates by plasmid profile. The organism was recovered from one milk sample (3.33%) of both cows and goats, however, it failed to be detected in ewe• s milk. Concerning the examined faeces of cows, ewes and goats, the prevalence of Y enterocolitica was 13.33, 10 and 10%, respectively. Moreover. it has been isolated from milk and faeces of only one (3.33%) of both dairy cows and goats. In addition, out of 12 Y.enterocolitica isolates, 2 (16.67%) from milk samples and 10 (83.33%) from faecal samples were obtained. Whereas, 2 virulent, plasmid bearing isolates and of biotypes 1B and 4 (8.33%) were recovered from cow's and goat's milk, respectively.

Summary in Arabic.