Comparison of the efficacy of rotavirus VLP vaccines to a live homologous rotavirus vaccine in a pig model of rotavirus disease.
Rotavirus-like particles (VLPs) have shown promise as rotavirus vaccine candidates in mice, rabbits and pigs. In pigs, VLP vaccines reduced rotavirus shedding and disease but only when used in conjunction with live attenuated human rotavirus. Using a porcine rotavirus pig model, rotavirus antigen shedding was reduced by up to 40% after vaccination with VLPs including the neutralizing antigens VP7 and VP8* when used in combination with the adjuvant polyphosphazene poly[di(carbozylatophenoxy)phoshazene] (PCPP). In contrast, complete protection from rotavirus antigen shedding and disease was induced by vaccination with the virulent porcine rotavirus PRV 4F. This is the first study to demonstrate some post-challenge reductions in rotavirus antigen shedding in a pig model of rotavirus disease after vaccination with VLPs without combining with infectious rotavirus.
El-Attar
L
L
Department of Pathology and Infectious Diseases, Royal Veterinary College, Royal College St., London NW1 0TU, UK.
Oliver
S L
SL
Mackie
A
A
Charpilienne
A
A
Poncet
D
D
Cohen
J
J
Bridger
J C
JC
D000818:Animals; D000914:Antibodies, Viral / Q000096:biosynthesis; D000956:Antigens, Viral / Q000276:immunology; D036022:Capsid Proteins / Q000276:immunology; D002417:Cattle; D004195:Disease Models, Animal; D016601:RNA-Binding Proteins / Q000276:immunology; D012400:Rotavirus Infections / Q000517:prevention & control*; D022243:Rotavirus Vaccines / Q000276:immunology*; D013552:Swine; D014611:Vaccination; D017361:Viral Nonstructural Proteins / Q000276:immunology; D014771:Virion / Q000276:immunology*
D000914:Antibodies, Viral; D000956:Antigens, Viral; D036022:Capsid Proteins; D016601:RNA-Binding Proteins; D022243:Rotavirus Vaccines; C050779:VP7 protein, Rotavirus; D017361:Viral Nonstructural Proteins; C079234:NS35 protein, rotavirus