Neutralizing antibody response following vaccination and challenge infection.

a<p>The neutralizing antibody titer is expressed as the reciprocal of the highest dilution of serum that could inhibit >50% of the replicates of 200 TCID₅₀ of the CSFV Shimen strain.</p>b<p>Pigs were booster immunized at four weeks.</p>c<p>Pigs were challenged with 1×10⁵ TCID₅₀ of virulent CSFV at 32 weeks post-immunization.</p>d<p>Pigs exhibiting severe clinical symptoms were euthanized.</p><p>Neutralizing antibody response following vaccination and challenge infection.