The efficacy of an inactivated bovine respiratory syncytial virus (BRSV) — bovine parainfluenza type 3 (PI3) — Mannheimia haemolytica ( Mh ) combination vaccine was examined in two field studies. Calves were vaccinated (i) with the inactivated vaccine, (ii) a modified live/killed viral combination vaccine, or (iii) left unvaccinated. The efficacy of the vaccines was judged by the (i) number of treated animals, (ii) number of individual antibiotic treatments per calf and (iii) mortality rates. After vaccination with the inactivated vaccine, the number of calves requiring antibiotic treatment was significantly lower than in the unvaccinated group (odds ratios: 0.26 first study and 0.53 second study), but differences between vaccination with live/killed combination vaccines and controls were not significant (odds ratios: 0.56 and 0.90, respectively). In both studies, a number of unvaccinated controls died due to respiratory disease (4.6% first and 6.7% second study). By contrast, none of the animals vaccinated with the inactivated vaccine died in the first study and only 3.3% in the second study. The mortality rates for the groups vaccinated with the live vaccine (1.3% and 7.8%) were similar to the unvaccinated controls. In summary, these data demonstrate the efficacy of the inactivated vaccine under field conditions.
Alkan, F., Ozkul, A., Bilge-Dagalp, S., Yesilbag, K., Oguzoglu, T. C., Akca, Y. and Burgu, I. (2000): Virological and serological studies on the role of PI-3 virus, BRSV, BVDV and BHV-1 on respiratory infections of cattle. I. The detection of etiological agents by direct immunofluorescence technique. Dtsch. Tierärztl. Wochenschr. 107 , 193–195.
Burgu I. , 'Virological and serological studies on the role of PI-3 virus, BRSV, BVDV and BHV-1 on respiratory infections of cattle. I. The detection of etiological agents by direct immunofluorescence technique ' (2000 ) 107 Dtsch. Tierärztl. Wochenschr. : 193 -195.
Babiuk, L. A., Lawman, M. J. and Ohmann, H. B. (1988): Viral-bacterial synergistic interaction in respiratory disease. Adv. Virus Res. 35 , 219–249.
Ohmann H. B. , 'Viral-bacterial synergistic interaction in respiratory disease ' (1988 ) 35 Adv. Virus Res. : 219 -249.
Baker, J. C., Ellis, J. A. and Clark, E. G. (1997): Bovine respiratory syncytial virus. Vet. Clin. North Am. Food Anim. Pract. 13 , 425–454.
Clark E. G. , 'Bovine respiratory syncytial virus ' (1997 ) 13 Vet. Clin. North Am. Food Anim. Pract. : 425 -454.
Bryson, D. G., McFerran, J. B., Ball, H. J. and Neill, S. D. (1978): Observations on outbreaks of respiratory disease in housed animals — (1) Epidemiological, clinical and microbiological findings. Vet. Rec. 103 , 485–489.
Neill S. D. , 'Observations on outbreaks of respiratory disease in housed animals — (1) Epidemiological, clinical and microbiological findings ' (1978 ) 103 Vet. Rec. : 485 -489.
Ellis, J. A., Hassard, L. E. and Morley, P. S. (1995): Bovine respiratory syncytial virus-specific immune responses in calves after inoculation with commercially available vaccines. J. Am. Vet. Med. Assoc. 206 , 354–361.
Morley P. S. , 'Bovine respiratory syncytial virus-specific immune responses in calves after inoculation with commercially available vaccines ' (1995 ) 206 J. Am. Vet. Med. Assoc. : 354 -361.
Fulton, R. W., Confer, A. W., Burge, L. J., Perino, L. J., d’Offay, J. M., Payton, M. E. and Mock, R. E. (1995): Antibody responses by cattle after vaccination with commercial viral vaccines containing bovine herpesvirus-1, bovine viral diarrhea virus, parainfluenza-3 virus, and bovine respiratory syncytial virus immunogens and subsequent revaccination at day 140. Vaccine 13 , 725–733.
Mock R. E. , 'Antibody responses by cattle after vaccination with commercial viral vaccines containing bovine herpesvirus-1, bovine viral diarrhea virus, parainfluenza-3 virus, and bovine respiratory syncytial virus immunogens and subsequent revaccination at day 140 ' (1995 ) 13 Vaccine : 725 -733.
Gilmour, N. J., Donachie, W., Sutherland, A. D., Gilmour, J. S., Jones, G. E. and Quirie, M. (1991): Vaccine containing iron-regulated proteins of Pasteurella haemolytica A2 enhances protection against experimental pasteurellosis in lambs. Vaccine 9 , 137–140.
Quirie M. , 'Vaccine containing iron-regulated proteins of Pasteurella haemolytica A2 enhances protection against experimental pasteurellosis in lambs ' (1991 ) 9 Vaccine : 137 -140.
Howard, C. J., Stott, E. J., Thomas, L. H., Gourlay, R. N. and Taylor, G. (1987): Protection against respiratory disease in calves induced by vaccines containing respiratory syncytial virus, parainfluenza type 3 virus, Mycoplasma bovis and M. dispar . Vet. Rec. 121 , 372–376.
Taylor G. , 'Protection against respiratory disease in calves induced by vaccines containing respiratory syncytial virus, parainfluenza type 3 virus, Mycoplasma bovis and M. dispar ' (1987 ) 121 Vet. Rec. : 372 -376.
Kerkhofs, P., Tignon, M., Petry, H., Mawhinney, I. and Sustronck, B. (2004): Immune responses to bovine respiratory syncytial virus (BRSV) following use of an inactivated BRSV-PI3- Mannheimia haemolytica vaccine and a modified live BRSV-BVDV vaccine. Vet. J. 167 , 208–210.
Sustronck B. , 'Immune responses to bovine respiratory syncytial virus (BRSV) following use of an inactivated BRSV-PI3-Mannheimia haemolytica vaccine and a modified live BRSV-BVDV vaccine ' (2004 ) 167 Vet. J. : 208 -210.
Loneragan, G. H., Gould, D. H., Mason, G. L., Garry, F. B., Yost, G. S., Miles, D. G., Hoffman, B. W. and Mills, L. J. (2001): Involvement of microbial respiratory pathogens in acute interstitial pneumonia in feedlot cattle. Am. J. Vet. Res. 62 , 1519–1524.
Mills L. J. , 'Involvement of microbial respiratory pathogens in acute interstitial pneumonia in feedlot cattle ' (2001 ) 62 Am. J. Vet. Res. : 1519 -1524.
Mawhinney, I. C. and Burrows, M. R. (2005): Protection against bovine respiratory syncytial virus challenge following a single dose of vaccine in young calves with maternal antibody. Vet. Rec. 156 , 139–143.
Burrows M. R. , 'Protection against bovine respiratory syncytial virus challenge following a single dose of vaccine in young calves with maternal antibody ' (2005 ) 156 Vet. Rec. : 139 -143.
Odendaal, M. W., Morris, S., du Preez, E. and Aitchison, H. (1997): The humoral immune response in cattle after immunization with a multivalent IBR/PI3/ Pasteurella haemolytica A1 leukotoxin vaccine. Onderstepoort J. Vet. Res. 64 , 205–212.
Aitchison H. , 'The humoral immune response in cattle after immunization with a multivalent IBR/PI3/Pasteurella haemolytica A1 leukotoxin vaccine ' (1997 ) 64 Onderstepoort J. Vet. Res. : 205 -212.
Patel, J. R. (2004): Evaluation of a quadrivalent inactivated vaccine for the protection of cattle against diseases due to common viral infections. J. S. Afr. Vet. Assoc. 75 , 137–146.
Patel J. R. , 'Evaluation of a quadrivalent inactivated vaccine for the protection of cattle against diseases due to common viral infections ' (2004 ) 75 J. S. Afr. Vet. Assoc. : 137 -146.
Peters, A. R., Thevasagayam, S. J., Wiseman, A. and Salt, J. S. (2004): Duration of immunity of a quadrivalent vaccine against respiratory diseases caused by BHV-1, PI3V, BVDV, and BRSV in experimentally infected calves. Prev. Vet. Med. 66 , 63–77.
Salt J. S. , 'Duration of immunity of a quadrivalent vaccine against respiratory diseases caused by BHV-1, PI3V, BVDV, and BRSV in experimentally infected calves ' (2004 ) 66 Prev. Vet. Med. : 63 -77.
Stott, E. J., Thomas, L. H., Howard, C. J. and Gourlay, R. N. (1987): Field trial of a quadrivalent vaccine against calf respiratory disease. Vet. Rec. 121 , 342–347.
Gourlay R. N. , 'Field trial of a quadrivalent vaccine against calf respiratory disease ' (1987 ) 121 Vet. Rec. : 342 -347.
Welsh, R. D., Dye, L. B., Payton, M. E. and Confer, A. W. (2004): Isolation and antimicrobial susceptibilities of bacterial pathogens from bovine pneumonia: 1994–2002. J. Vet. Diagn. Invest. 16 , 426–431.
Confer A. W. , 'Isolation and antimicrobial susceptibilities of bacterial pathogens from bovine pneumonia: 1994–2002 ' (2004 ) 16 J. Vet. Diagn. Invest. : 426 -431.
West, K. and Ellis, J. (1997): Functional analysis of antibody responses of feedlot cattle to bovine respiratory syncytial virus following vaccination with mixed vaccines. Can. J. Vet. Res. 61 , 28–33.
Ellis J. , 'Functional analysis of antibody responses of feedlot cattle to bovine respiratory syncytial virus following vaccination with mixed vaccines ' (1997 ) 61 Can. J. Vet. Res. : 28 -33.