INDUCED LATENCY IN PSEUDORABIES VACCINATED PIGS

  • 1 January 1981
    • journal article
    • research article
    • Vol. 45  (1) , 56-59
Abstract
A latent pseudorabies virus infection was established in pigs despite vaccination with a modified-live pseudorabies virus vaccine. Although the vaccinated pigs developed high concentrations of antibody, virus was recovered from the tonsils and lungs of pigs treated with dexamethasone 3 mo. after inoculation with virulent virus. These results may explain why vaccination programs have failed to eliminate the persistence and spread of virulent pseudorabies virus in infected herds.