Universidad Complutense de Madrid
E-Prints Complutense

A novel spatial and stochastic model to evaluate the within and between farm transmission of classical swine fever virus: II Validation of the model

Impacto

Downloads

Downloads per month over past year



Martínez López, Beatriz and Ivorra, Benjamin and Ramos del Olmo, Ángel Manuel and Sánchez-Vizcaíno, José Manuel (2012) A novel spatial and stochastic model to evaluate the within and between farm transmission of classical swine fever virus: II Validation of the model. Veterinary Microbiology, 155 (1). pp. 21-32. ISSN ISSN: 0378-1135, ESSN: 1873-2542

[img]
Preview
PDF
664kB

Official URL: http://www.journals.elsevier.com/veterinary-microbiology/



Abstract

A new, recently published, stochastic and spatial model for the evaluation of classical swine fever virus (CSFV) spread into Spain has been validated by using several methods. Internal validity, sensitivity analysis, validation using historical data, comparison with other models and experiments on data validity were used to evaluate the overall reliability and robustness of the model. More than 100 modifications in input data and parameters were evaluated. Outputs were obtained after 1000 iterations for each new scenario of the model. As a result, the model was shown to be robust, being the probability of infection by local spread, the time from infectious to clinical signs state, the probability of detection based on clinical signs at day t after detection of the index case outside the control and surveillance zones and the maximum number of farms to be depopulated at day t the parameters that more influence (>10% of change) on the magnitude and duration of the epidemic. The combination of a within- and between- farm spread model was also shown to give significantly different results than using a purely between-farm spread model. Methods and results presented here were intended to be useful to better understand and apply the model, to identify key parameters for which it will be critical to have good estimates and to provide better support for prevention and control of future CSFV outbreaks.


Item Type:Article
Uncontrolled Keywords:Classical swine fever; Stochastic model; Validation; Sensitivity analysis; Spain
Subjects:Sciences > Mathematics
Medical sciences > Veterinary
ID Code:25528
Deposited On:18 Jun 2014 12:09
Last Modified:12 Dec 2018 15:07

Origin of downloads

Repository Staff Only: item control page