Prevalence of bovine herpesvirus-1 in the Belgian cattle population
| Autor: | J. P. Vermeersch, B Soumare, Dirk Berkvens, P. Biront, J Dufey, A. Raskin, Pierre Kerkhofs, F. Boelaert, E Vanopdenbosch, Marc Dispas |
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| Rok vydání: | 2000 |
| Předmět: |
Veterinary medicine
animal diseases Population Antibodies Viral Serology Random Allocation Belgium Food Animals Seroepidemiologic Studies Animals Medicine Seroprevalence education Infectious Bovine Rhinotracheitis Herpesvirus 1 Bovine education.field_of_study biology business.industry Vaccination Herpesviridae Infections biology.organism_classification Confidence interval Bovine herpesvirus 1 Quartile Herd Cattle Animal Science and Zoology business Herd prevalence |
| Zdroj: | Preventive Veterinary Medicine. 45:285-295 |
| ISSN: | 0167-5877 |
| DOI: | 10.1016/s0167-5877(00)00128-8 |
| Popis: | The national bovine herpesvirus 1 (BHV-1) seroprevalence (apparent prevalence) in the Belgian cattle population was determined by a serological survey that was conducted from December 1997 to March 1998. In a random sample of herds (N=556), all cattle (N=28 478) were tested for the presence of antibodies to glycoprotein B of BHV-1. No differentiation could be made between vaccinated and infected animals, because the exclusive use of marker vaccines was imposed by law only in 1997 by the Belgian Veterinary Authorities. Twenty-one percent of the farmers vaccinated continuously against BHV-1. In the unvaccinated group, the overall herd, individual-animal and median within-herd seroprevalences were estimated to be 67% (95% confidence interval (CI)=62–72), 35.9% (95% CI=35.0–36.8) and 33% (quartiles=14–62), respectively. Assuming a test sensitivity and specificity of 99 and 99.7%, respectively, the true herd, individual-animal and median within-herd prevalence for the unvaccinated group of herds were estimated to be 65, 36 and 34%, respectively. The true herd prevalence for dairy, mixed and beef herds were respectively, 84, 89 and 53%; the true individual-animal prevalence for those types of herds were, respectively, 35, 43 and 31%; whereas, the true median within-herd prevalences were 36, 29 and 38%. |
| Databáze: | OpenAIRE |
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