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  • Title: Persistence of antibodies and anamnestic response in calves vaccinated with inactivated infectious bovine rhinotracheitis virus and parainfluenza-3 virus vaccines.
    Author: Sweat RL.
    Journal: J Am Vet Med Assoc; 1983 Apr 15; 182(8):809-11. PubMed ID: 6303996.
    Abstract:
    Persistence of antibodies in calves vaccinated with 2 types of inactivated infectious bovine rhinotracheitis (IBR) virus and parainfluenza-3 (PI-3) virus vaccines were determined. Calves seronegative for IBR and PI-3 viruses were inoculated with 2 doses of inactivated IBR virus-PI-3 virus vaccines administered 2 weeks apart. Blood samples were obtained from the calves for serum at 2 weeks, 6 months, and 1 year after vaccination. The serums were tested by serum-neutralization tests. Antibody response to the vaccines persisted on a declining scale for 1 year. The anamnestic responses to the vaccines were determined by inoculating the same calves with a booster dose of vaccine 1 year after the original 2 doses were given. Blood samples were obtained from the calves for serum 2 weeks later. The serums were tested by serum-neutralization tests. The single booster dose of vaccine elicited an anamnestic response to both IBR and PI-3 viruses.
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