Abstract:Summary
Sera from young cattle hyperimmunized with inactivated oil‐adjuvant Aujeszky's (AVa) or IBR vaccine and developing high titres of homologous antibodies (1: 256–1: 4,096) neutralized also the heterologous virus. Mutual cross‐neutralization activity was recorded in nasal secretions from calves at the time of the highest titres of serum antibodies.
Susceptible calves with no antibodies against IBR virus produced, after vaccination and re‐vaccination with AVa or IBR vaccine, antibodies at medium or high ti… Show more
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