Abstract
Two hundred and fifty dairy heifers were vaccinated at three to six months of age with an intranasal infectious bovine rhinotracheitis-parainfluenza-3 vaccine. Eighteen additional heifers were tested prior to vaccination and again three to four weeks after vaccination. Neither cell-mediated nor humoral immunity was significantly raised to parainfluenza-3 virus in either group of cattle.
MeSH terms
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Administration, Intranasal
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Age Factors
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Animals
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Antibodies, Viral / biosynthesis
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Cattle
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Cattle Diseases / prevention & control*
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Female
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Hemagglutination Inhibition Tests / veterinary
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Herpesvirus 1, Bovine / immunology*
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Lymphocyte Activation*
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Parainfluenza Virus 3, Human / immunology*
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Paramyxoviridae Infections / prevention & control
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Paramyxoviridae Infections / veterinary*
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Respirovirus / immunology*
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Viral Vaccines / administration & dosage
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Viral Vaccines / immunology*
Substances
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Antibodies, Viral
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Viral Vaccines