Porcine circovirus type 2 (PCV2) vaccination of conventional pigs prevents viremia against PCV2 isolates of different genotypes and geographic origins.
The efficacy of recently developed porcine circovirus type 2 (PCV2) vaccines has not been tested yet against PCV2 isolates of the two proposed genotypes. In the present work, the efficacy of a subunit vaccine containing PCV2 capsid protein was evaluated by using a challenge model with four different PCV2 isolates of different genotype and geographic origin. The vaccine prevented the development of viremia in all cases as well as significantly decreased nasal and faecal shedding of the virus. Also, the vaccine elicited PCV2-specific neutralizing antibodies to PCV2 even in the presence of maternally derived immunity.
Fort
M
M
Centre de Recerca en Sanitat Animal, Esfera UAB, Universitat Autònoma de Barcelona, Bellaterra 08193, Barcelona, Spain. maria.fort@cresa.uab.es
Sibila
M
M
Allepuz
A
A
Mateu
E
E
Roerink
F
F
Segalés
J
J
D000818:Animals; D000914:Antibodies, Viral / Q000097:blood; D036022:Capsid Proteins / Q000276:immunology*; D018173:Circoviridae Infections / Q000517:prevention & control; D017925:Circovirus / Q000235:genetics / Q000276:immunology*; D005243:Feces / Q000821:virology; D005838:Genotype; D009500:Neutralization Tests; D009666:Nose / Q000821:virology; D010802:Phylogeny; D013552:Swine; D013553:Swine Diseases / Q000517:prevention & control; D022223:Vaccines, Subunit / Q000276:immunology; D014766:Viremia / Q000517:prevention & control*; D017201:Virus Shedding / Q000276:immunology
D000914:Antibodies, Viral; D036022:Capsid Proteins; D022223:Vaccines, Subunit