Serological responses in calves to vaccines against bovine respiratory syncytial, infectious bovine rhinotracheitis, bovine viral diarrhoea and parainfluenza-3 viruses.
The Istituto Superiore di Sanità (ISS), the National Veterinary Services Laboratory in Italy, is in charge of assessing the quality, safety and efficacy of veterinary vaccines before and after licensing. To evaluate the relative potency of several vaccines against bovine respiratory syncytial virus (BRSV), infectious bovine rhinotracheitis virus (IBRV), bovine viral diarrhoea virus (BVDV) and parainfluenza-3 virus (PI3V), the serological responses in vaccinated calves were studied. Vaccination with any of the vaccines under study induced specific antibody titres against the different viral antigens. The differences of the mean antibody titres within and among the test group vaccines were statistically significant. The results confirm and support those obtained by other authors in similar studies, suggesting that serological responses in vaccinated calves can be used as a helpful means of assessing the relative potency of vaccines against viral respiratory diseases of cattle. The criteria allowing such an evaluation are discussed.
Tollis
M
M
Istituto Superiore di Sanità, Rome, Italy.
Di Trani
L
L
Cordioli
P
P
Vignolo
E
E
Di Pasquale
I
I
D000818:Animals; D000914:Antibodies, Viral / Q000097:blood*; D001912:Bovine Virus Diarrhea-Mucosal Disease / Q000276:immunology / Q000517:prevention & control; D002417:Cattle; D002418:Cattle Diseases / Q000276:immunology / Q000517:prevention & control*; D001908:Diarrhea Viruses, Bovine Viral / Q000276:immunology; D005069:Evaluation Studies as Topic; D007241:Infectious Bovine Rhinotracheitis / Q000276:immunology / Q000517:prevention & control; D010224:Parainfluenza Virus 3, Human / Q000276:immunology; D018184:Paramyxoviridae Infections / Q000276:immunology / Q000517:prevention & control / Q000662:veterinary; D018357:Respiratory Syncytial Virus Infections / Q000276:immunology / Q000517:prevention & control / Q000662:veterinary; D018112:Respiratory Syncytial Virus, Bovine / Q000276:immunology; D014765:Viral Vaccines / Q000494:pharmacology*
D000914:Antibodies, Viral; D014765:Viral Vaccines