[The epizootiology of BVD virus infections in Hessian dairy cattle stock].

Clinical manifestation and course of disease caused by BVD virus infection in 77 BVD-infected dairy cattle stocks in Middle Hessia are described. In 17 herds, serological and virological status of the animals was determined, and the results of an eradication program based on vaccination were evaluated. In animals with mucosal disease, a decrease in typical mucosal and interdigital lesions and an increase in respiratory symptoms with emaciation and a less specific pattern of disease could be observed.