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  • Title: Effectivity of Rev 1 vaccine in rams against brucella ovis infection.
    Author: Gradwell DV, Van Zyl FE.
    Journal: J S Afr Vet Assoc; 1975 Dec; 46(4):349-51. PubMed ID: 1223287.
    Abstract:
    Vaccination with Rev 1 at four months of age protected rams against experimental infection with Brucella ovis. A double vaccination did not improve immunity whereas rams vaccinated later in life showed a decreased immunity to the infection. Lesions and complement fixation reactions were found to be inadequate criteria for the diagnosis of the disease in the individual ram.
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