Wesley Johnson

Evaluation of the efficacy and duration of immunity of a bivalent subunit vaccine containing porcine circovirus type 2a and type 2d antigen

Porcine circovirus type 2 (PCV2) vaccination has been effective in protecting pigs from clinical disease and is used extensively today. Studies in vaccinated populations across the world indicate a major PCV2 genotype shift towards genotype 2d (PCV2d) becoming the predominant gen...