Duration of immunity in heifers inoculated with infectious bovine rhinotracheitis virus

Chow, T.L.

Journal of the American Veterinary Medical Association 160(1): 51-54

1972


ISSN/ISBN: 0003-1488
PMID: 4332609
Document Number: 55124
The immunity in heifers lasted for at least 51/2 years after a single intratracheal or i/m inoculation of the virus. Animals with a serum-neutralizing titre of 102.4 or higher were sufficiently immune to withstand a challenge dose of the virus.

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