THE EFFECT OF Theileria INFECTION ON THE IMMUNE RESPONSES OF CATTLE TO RINDERPEST VACC
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Abstract
Immune responses to rinderpest virus vaccine were studied in 25 calves (3-months old) naturally infected with Theilria and non-infected 25 calves (3-months old) as control group. The immune responses to rinderpest virus vaccine before vaccination and 21 days post-vaccination were examined by serum neutralization test on tissue culture. The results indicated that calves affected with theileriasis showed diminished level of antibodies after 21 days post-vaccination with rinderpest virus vaccine in comparisons with those of the Theileria non-infected calves
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