[Case of MD-VD in cattle]

An enzootic is described of the classic form of virus diarrhea mucosal disease on a newly organized farm for heifers. The disease ran a sporadic course, mainly with intrauterine infections, while with the calves it was recorded as an enzootic with 100 per cent morbidity rate and 28 per cent mortality rate. The clinical picture was complicated--in some calves the disease started with fever, in other respiratory distrubances were observed, while in a third group diarrhea was prevailing. A detailed description is given of the clinical symptoms and the morphological lesions. A virus was isolated, identified as a virus of the mucosal disease--virus diarrhea. A virus antigen was likewise demonstrated by the gel precipitation test after Wachendorfer and Darbyshire, modified by Haralambiev. Various agents were used for treatment. Better results produced the strain K vaccine against swine fever in combination with semiliquid agar.