Diagnosis of pseudorabies virus infection in pigs with specific DNA probes.

Two dna probes directed against pseudorabies virus dna were developed for use in a dot hybridisation to detect the presence of pseudorabies virus in infected tissues. The specificity of the probes and their sensitivity were analysed. There was a strong correlation between the results obtained by dot hybridisation and those obtained by conventional methods of virus isolation from the same tissue specimens.