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A case study of bovine tuberculosis in an area of County Donegal, Ireland.

Olea-Popelka F, Butler D, Lavin D, McGrath G, O'Keeffe J, Kelton D, Berke O, More S, Martin W - Ir Vet J (2006)

Bottom Line: Seventy two different herds were restricted for BTB during the FAP; 10 of these herds were restricted twice, resulting in a total of 82 BTB breakdowns.The analysis supports the hypothesis that BTB in herds is a problem that cannot be addressed successfully by dedicating our efforts to the elimination of single risk factors.Neither is it a problem that needs to be investigated only at the herd level, but rather at the area level, including groups of contiguous herds.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Population Medicine, Ontario Veterinary College, University of Guelph, Clinical Research Building, Guelph, Ontario, Canada N1G 2W1. olea@uoguelph.ca.

ABSTRACT
A descriptive analysis, to investigate the potential risk factors that might have contributed to the increased incidence of bovine tuberculosis (BTB) herd-breakdowns in the reference area of Co. Donegal during the fifth year of the four-area project (FAP), was performed. Seventy two different herds were restricted for BTB during the FAP; 10 of these herds were restricted twice, resulting in a total of 82 BTB breakdowns. During the first four years of the FAP, the number of BTB herd breakdowns in the area varied from a lowest of nine to a maximum of 18 per year, and were geographically dispersed. In the fifth year of the study a considerable increase in the number of BTB breakdowns (n = 32) was observed, and there was a spatial 'cluster' of infected herds in the eastern part of the study area. The increased number of BTB breakdowns during the fifth year most likely occurred because of the recrudescence of infection, herd-to-herd transmission and, to a lesser extent, purchase of infected cattle. Infected badgers remain as a possible but less likely source of infection, especially as an explanation for the cluster of infected herds. The analysis supports the hypothesis that BTB in herds is a problem that cannot be addressed successfully by dedicating our efforts to the elimination of single risk factors. Neither is it a problem that needs to be investigated only at the herd level, but rather at the area level, including groups of contiguous herds.

No MeSH data available.


Related in: MedlinePlus

Spatial-temporal distribution of the BTB herd breakdowns in reference area Co. Donegal, 1997-2002.
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Figure 2: Spatial-temporal distribution of the BTB herd breakdowns in reference area Co. Donegal, 1997-2002.

Mentions: Table 1 summarises some characteristics of the 82 BTB breakdowns. The spatial-temporal distribution of the BTB breakdowns over the study period is presented in Figure 2. During the first four years, breakdowns were mainly isolated events distributed across the study area. However, of the 31 BTB-positive herds identified during the fifth year, 18 were immediate neighbours, forming a cluster of infected herds within an approximate radius of 1.8 km (Figure 2; circled).


A case study of bovine tuberculosis in an area of County Donegal, Ireland.

Olea-Popelka F, Butler D, Lavin D, McGrath G, O'Keeffe J, Kelton D, Berke O, More S, Martin W - Ir Vet J (2006)

Spatial-temporal distribution of the BTB herd breakdowns in reference area Co. Donegal, 1997-2002.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3113890&req=5

Figure 2: Spatial-temporal distribution of the BTB herd breakdowns in reference area Co. Donegal, 1997-2002.
Mentions: Table 1 summarises some characteristics of the 82 BTB breakdowns. The spatial-temporal distribution of the BTB breakdowns over the study period is presented in Figure 2. During the first four years, breakdowns were mainly isolated events distributed across the study area. However, of the 31 BTB-positive herds identified during the fifth year, 18 were immediate neighbours, forming a cluster of infected herds within an approximate radius of 1.8 km (Figure 2; circled).

Bottom Line: Seventy two different herds were restricted for BTB during the FAP; 10 of these herds were restricted twice, resulting in a total of 82 BTB breakdowns.The analysis supports the hypothesis that BTB in herds is a problem that cannot be addressed successfully by dedicating our efforts to the elimination of single risk factors.Neither is it a problem that needs to be investigated only at the herd level, but rather at the area level, including groups of contiguous herds.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Population Medicine, Ontario Veterinary College, University of Guelph, Clinical Research Building, Guelph, Ontario, Canada N1G 2W1. olea@uoguelph.ca.

ABSTRACT
A descriptive analysis, to investigate the potential risk factors that might have contributed to the increased incidence of bovine tuberculosis (BTB) herd-breakdowns in the reference area of Co. Donegal during the fifth year of the four-area project (FAP), was performed. Seventy two different herds were restricted for BTB during the FAP; 10 of these herds were restricted twice, resulting in a total of 82 BTB breakdowns. During the first four years of the FAP, the number of BTB herd breakdowns in the area varied from a lowest of nine to a maximum of 18 per year, and were geographically dispersed. In the fifth year of the study a considerable increase in the number of BTB breakdowns (n = 32) was observed, and there was a spatial 'cluster' of infected herds in the eastern part of the study area. The increased number of BTB breakdowns during the fifth year most likely occurred because of the recrudescence of infection, herd-to-herd transmission and, to a lesser extent, purchase of infected cattle. Infected badgers remain as a possible but less likely source of infection, especially as an explanation for the cluster of infected herds. The analysis supports the hypothesis that BTB in herds is a problem that cannot be addressed successfully by dedicating our efforts to the elimination of single risk factors. Neither is it a problem that needs to be investigated only at the herd level, but rather at the area level, including groups of contiguous herds.

No MeSH data available.


Related in: MedlinePlus