Spatial modelling of the between-herd infection dynamics of bovine virus diarrhoea virus (BVDV) in dairy herds in Denmark.
Prev Vet Med
; 97(2): 83-9, 2010 Nov 01.
Article
in En
| MEDLINE
| ID: mdl-20850882
ABSTRACT
According to the current literature BVDV-infected neighbours probably impose a high risk of infection of susceptible cattle herds. In the present study, the objective was to evaluate the risk of a dairy herd changing infection status (from not having persistently infected (PI) animals to having PI-animals) in relation to location and infection status of neighbouring cattle herds in Denmark. In total, 7921 dairy herds were included in the analysis of spatial and non-spatial risk factors. The spatial risk factors were derived based on the cattle herds in the neighbourhood (N=36,639 cattle herds). The neighbourhood was defined as the first order neighbouring cattle herds using a Delauney triangularization. In total, 13.3% of the dairy herds changed herd status to PI-herds during the study period that lasted from January 1, 1995, to June 30, 1996. The risk of becoming a PI-herd was negatively associated with the mean distance to the neighbouring herds (OR=0.7 for an increase of 1 km). Presence of PI-herds in the neighbourhood increased the risk of becoming a PI-herd (OR=1.37, 1.40, 1.70 for 1, 2, ≥3 PI-herds in the neighbourhood). Increasing herd size increased the risk of becoming a PI-herd (OR=3.9 for an increase of 10 cows). Regional differences were seen.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Bovine Virus Diarrhea-Mucosal Disease
/
Diarrhea Viruses, Bovine Viral
Type of study:
Etiology_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Animals
Country/Region as subject:
Europa
Language:
En
Journal:
Prev Vet Med
Year:
2010
Document type:
Article
Affiliation country:
Denmark
Publication country:
HOLANDA
/
HOLLAND
/
NETHERLANDS
/
NL
/
PAISES BAJOS
/
THE NETHERLANDS