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During the hunting season 1990/1991 a total of 841 blood samples was collected from shot wild boar corresponding to about 2.11% of the total hunting bag in Lower Saxony. All the sera were screened for neutralizing antibodies (nAb) to hog cholera virus (HCV) and bovine viral diarrhoea virus (BVDV) by direct neutralizing peroxidase linked antibody (NPLA)(More)
A virological survey was carried out to establish the distribution of classical swine fever (CSF) virus among wild boar in the Federal State of Brandenburg, Germany. Organ materials and blood samples were collected from 11,670 wild boar shot or found dead during the period March 1995 to December 1997. In total 211 (1.8%) wild boar were positive for CSF(More)
A review is given on classical swine fever (CSF) including epizootiology, clinical disease and pathology. Under the item of epizootiology the history of CSF is briefly summarized. Ways of transmission are described with special reference to CSF in wild boars. The chapter about clinical disease includes the description of different courses of CSF such as(More)
Five monoclonal antibodies against the bovine viral diarrhoea (BVD) viral strain NADL were isolated and characterized by an indirect immunofluorescence assay. Extensive cross-reactions were detected when the antibodies were tested with 12 heterologous BVD and four hog cholera (HC) viral strains. One antibody reacted with all strains tested. Two antibodies(More)
Ruminant pestivirus infections of pigs have a worldwide distribution. The prevalence is varied and depends mainly on (i) contact with cattle, (ii) age of pigs and (iii) degree of homology of virus strains used for serology, with field strains of bovine virus diarrhoea virus (BVDV) infecting pigs. Emphasis should be laid on sources of BVDV other than cattle,(More)
Experimental infection of nine cattle with seven rinderpest virus strains of different pathogenicity resulted in significant variations of clinical signs, morphological lesions and distribution of viral antigen in tissues. The severity of clinical disease was correlated with the extent of tissue alterations and the amount of immunohistologically detectable(More)
BVDV shares with other Pestiviruses the ability to cross the placenta of pregnant host animals. The effects of fetal infections are complex and depend on a number of factors, e.g., age of the zygote/embryo stage, no infection seems to occur. During the last one third of gestation the infection is terminated by the ontogeny of the fetal immune system. This(More)
Mucosal disease can be experimentally induced by inoculating calves persistently viremic with noncytopathogenic (ncp) Bovine Virus Diarrhea Virus (BVDV) with an antigenetically closely related cytopathogenic (cp) BVDV strain. Calves suffering from mucosal disease develop severe intestinal lesions causing breakdown of the gastrointestinal barrier and death.(More)
To study the relationships between herpesvirus recently isolated from different pinniped species, antigenic and genetic analyses were performed. First, herpesviruses isolated from North American harbour seals (Phoca vitulina), a Californian sea lion (Zalophus californianus) and a European grey seal (Halichoerus grypus) were examined in an enzyme immunoassay(More)