Skip to main content

Research Repository

Advanced Search

Spatial modeling for low pathogenicity avian influenza virus at the interface of wild birds and backyard poultry

La Sala, L F; Burgos, J M; Blanco, D E; Stevens, K B; Fernández, A R; Capobianco, G; Tohme, F; Pérez, A M


L F La Sala

J M Burgos

D E Blanco

K B Stevens

A R Fernández

G Capobianco

F Tohme

A M Pérez


Low pathogenicity avian influenza virus (LPAIV) is endemic in wild birds and poultry in Argentina, and active surveillance has been in place to prevent any eventual virus mutation into a highly pathogenic avian influenza virus (HPAIV), which is exotic in this country. Risk mapping can contribute effectively to disease surveillance and control systems, but it has proven a very challenging task in the absence of disease data. We used a combination of expert opinion elicitation, multicriteria decision analysis (MCDA), and ecological niche modeling (ENM) to identify the most suitable areas for the occurrence of LPAIV at the interface between backyard domestic poultry and wild birds in Argentina. This was achieved by calculating a spatially‐explicit risk index. As evidenced by the validation and sensitivity analyses, our model was successful in identifying high‐risk areas for LPAIV occurrence. Also, we show that the risk for virus occurrence is significantly higher in areas closer to commercial poultry farms. Although the active surveillance systems have been successful in detecting LPAIV‐positive backyard farms and wild birds in Argentina, our predictions suggest that surveillance efforts in those compartments could be improved by including high‐risk areas identified by our model. Our research provides a tool to guide surveillance activities in the future, and presents a mixed methodological approach which could be implemented in areas where the disease is exotic or rare and a knowledge‐driven modeling method is necessary.


La Sala, L. F., Burgos, J. M., Blanco, D. E., Stevens, K. B., Fernández, A. R., Capobianco, G., …Pérez, A. M. (in press). Spatial modeling for low pathogenicity avian influenza virus at the interface of wild birds and backyard poultry. Transboundary and Emerging Diseases, 66(4), 1493-1505.

Journal Article Type Article
Acceptance Date Jan 1, 2019
Deposit Date Feb 19, 2019
Publicly Available Date Feb 19, 2019
Journal Transboundary and Emerging Diseases
Print ISSN 1865-1674
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 66
Issue 4
Pages 1493-1505
Public URL