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Analysis of the cattle movement network and its association with the risk of bovine tuberculosis at the farm level in Castilla y Leon, Spain

Artículo de investigación publicado en Transboundary and Emerging Diseases

1 de octubre de 2018

Between-farm transmission of bovine tuberculosis (bTB) occurs mostly through fence-to-fence contact between neighboring farms, endemic infected wildlife or movement of infected animals. Unfortunately, bTB detection is frequently delayed and identification of the source of introduction is often difficult, particularly in endemic regions. Here, we characterized the cattle movement network of Castilla y Leon, a high bTB-prevalence (1.9% at the farm-level in 2015) region in Spain, over six years and analyzed the distribution of bTB to ultimately assess the likelihood of spatial and movement-mediated transmission. We analyzed movement and bTB data from 27,633 units located in the region, of which 87% were involved in ~1.4 million movements of ~8.8 million animals. Network-level connectivity was low, although a few highly connected units were identified. Up to 15% of the herds became bTB-positive at some point during the study, with the highest percentage found in bullfighting and beef herds. Although bTB-positive herds had a significantly higher degree and moved more cattle than negative herds, results of the k-test, a permutation-based procedure, suggested that positive farms were not significantly clustered in the movement network. Location was a likely risk factor as bTB-positive farms tended to be located within 5 km from each other. Results suggested that movements may be a source of bTB in cattle in Castilla y Leon, although local factors may be more influential in determining risk of disease at the farm level. The description of the movement network in Castilla y Leon may be valuable for bTB surveillance in Spain. Moreover, results are useful to assess the movement-associated risk for multiple diseases. This article is protected by copyright. All rights reserved




Pozo P., VanderWaal K., Grau A., de la Cruz ML., Nacar J., Bezos J., Perez A., Minguez O. y Alvarez J..




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Analysis of the cattle movement network and its association with the risk of bovine tuberculosis at the farm level in Castilla y Leon, Spain

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Analysis of the cattle movement network and its association with the risk of bovine tuberculosis at the farm level in Castilla y Leon, Spain


Participantes:

Universidad ComplutenseServicio de Micobacterias (MYC). Centro de Vigilancia Sanitaria Veterinaria (VISAVET). Universidad Complutense (UCM).

MAEVA SERVET, S.L.MAEVA SERVET, S.L..

University of MinnesotaDepartment of Veterinary Population Medicine. College of Veterinary Medicine. University of Minnesota (UMM).

Junta de Castilla y LeónServicio de Sanidad Animal. Junta de Castilla y León.

Universidad ComplutenseDepartamento de Sanidad Animal. Facultad de Veterinaria. Universidad Complutense (UCM).







Transboundary and Emerging Diseases
FACTOR YEAR Q
3.554 2018

NLMID: 101319538

PMID: 30270505

ISSN: 1865-1674



TÍTULO: Analysis of the cattle movement network and its association with the risk of bovine tuberculosis at the farm level in Castilla y Leon, Spain


REVISTA: Transbound. Emerg. Dis.


NUMERACIÓN: 66(1):327-340


AÑO: 2018


EDITORIAL: Blackwell Verlag


AUTORES: Pozo P., VanderWaal K., Grau A., de la Cruz ML., Nacar J., Bezos J., Perez A., Minguez O. and Alvarez J..


PARTICIPANTES VISAVET


First
Pilar Pozo Piñol
6th
Javier Bezos Garrido
Last
Julio Álvarez Sánchez

DOI: https://doi.org/10.1111/tbed.13025


CITA ESTA PUBLICACIÓN:

Pozo P., VanderWaal K., Grau A., de la Cruz ML., Nacar J., Bezos J., Perez A., Minguez O. y Alvarez J. Analysis of the cattle movement network and its association with the risk of bovine tuberculosis at the farm level in Castilla y Leon, Spain. Transboundary and Emerging Diseases. 66(1):327-340. 2018. (A). ISSN: 1865-1674. DOI: 10.1111/tbed.13025


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