Distribuzione geografica dei campioni infetti dal virus H5n1 di influenza aviaria sottoposti ad analisi durante le fasi di introduzione e circolazione del virus in Nigeria tra il 2006 e il 2007

Pius S. Ekong; Carol J. Cardona; Ward Bryssinckx; Chinyere Ikechukwu-Eneh; Lami H. Lombin; Tim E. Carpenter

doi:10.12834/VetIt.870.4301.3

Distribuzione geografica dei campioni infetti dal virus H5n1 di influenza aviaria sottoposti ad analisi durante le fasi di introduzione e circolazione del virus in Nigeria tra il 2006 e il 2007

Translated title of the contribution: Spatial clustering of pathology submissions during the initial introduction and spread of avian influenza H5n1 in poultry in Nigeria in 2006-2007

Pius S. Ekong, Carol J. Cardona, Ward Bryssinckx, Chinyere Ikechukwu-Eneh, Lami H. Lombin, Tim E. Carpenter

Veterinary and Biomedical Sciences

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Highly pathogenic avian influenza (HPAI) virus H5N1 spread throughout Nigeria between 2006 and 2007. Bird samples collected across the country were submitted through the free-of-charge (FOC) program to the National Veterinary Research Institute, Vom (NVRI-Vom) laboratory. The present article describes the spatial distributions and evaluated clustering of the FOC submissions from poultry farms at the global, local, and focal levels between 2006 and 2007 epidemic in Nigeria. Spatial statistics evaluating clustering of the FOC submissions were implemented using the Moran’s I test, the purely spatial cluster analysis with the SaTScan Poisson model, and the Bithell's linear score test. A significant global clustering of the FOC submissions was observed. Significant local clusters of submissions were observed in the North-East, North-Central, and South-West zones. There was significant decline in FOC submissions with increasing distance from NVRI-Vom. These results indicated that the geographic area of influence of the FOC submission program in Nigeria was limited to regions closer to the diagnostic laboratory. This work provides a detailed insight into the surveillance activities during the HPAI outbreaks in Nigeria, and should assist policy-makers and field veterinarians to improve the effectiveness of national eradication plans in the face of any outbreak of animal diseases.

Translated title of the contribution	Spatial clustering of pathology submissions during the initial introduction and spread of avian influenza H5n1 in poultry in Nigeria in 2006-2007
Original language	Italian
Pages (from-to)	13-20
Number of pages	8
Journal	Veterinaria Italiana
Volume	54
Issue number	1
DOIs	https://doi.org/10.12834/VetIt.870.4301.3
State	Published - Jan 1 2018

Bibliographical note

Funding Information:
We are grateful to the National Veterinary Research Institute, Vom for providing us with the pathology submissions data, and the Avian Influenza Control Project, Abuja, Nigeria, for providing us with the data of registered poultry farms. This study was completed during Dr. Pius Ekong’s Masters in Preventive Veterinary Medicine (MPVM) at the School of Veterinary Medicine, University of California, Davis, USA, which was partially funded by the Graduate Student Support Program (GSSP) and the Baron’s Fellowship grants of the University of California, Davis USA.

Publisher Copyright:
© 2018, Istituto Zooprofilattico dell'Abruzzo e del Molise. All rights reserved.

Keywords

Avian influenza
Disease spread
HPAI-H5N1
Nigeria
Pathology submission
Poultry
Spatial clustering
Surveillance

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.12834/VetIt.870.4301.3

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Ekong, P. S., Cardona, C. J., Bryssinckx, W., Ikechukwu-Eneh, C., Lombin, L. H., & Carpenter, T. E. (2018). Distribuzione geografica dei campioni infetti dal virus H5n1 di influenza aviaria sottoposti ad analisi durante le fasi di introduzione e circolazione del virus in Nigeria tra il 2006 e il 2007. Veterinaria Italiana, 54(1), 13-20. https://doi.org/10.12834/VetIt.870.4301.3

Distribuzione geografica dei campioni infetti dal virus H5n1 di influenza aviaria sottoposti ad analisi durante le fasi di introduzione e circolazione del virus in Nigeria tra il 2006 e il 2007. / Ekong, Pius S.; Cardona, Carol J.; Bryssinckx, Ward et al.
In: Veterinaria Italiana, Vol. 54, No. 1, 01.01.2018, p. 13-20.

Research output: Contribution to journal › Article › peer-review

Ekong, PS, Cardona, CJ, Bryssinckx, W, Ikechukwu-Eneh, C, Lombin, LH & Carpenter, TE 2018, 'Distribuzione geografica dei campioni infetti dal virus H5n1 di influenza aviaria sottoposti ad analisi durante le fasi di introduzione e circolazione del virus in Nigeria tra il 2006 e il 2007', Veterinaria Italiana, vol. 54, no. 1, pp. 13-20. https://doi.org/10.12834/VetIt.870.4301.3

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abstract = "Highly pathogenic avian influenza (HPAI) virus H5N1 spread throughout Nigeria between 2006 and 2007. Bird samples collected across the country were submitted through the free-of-charge (FOC) program to the National Veterinary Research Institute, Vom (NVRI-Vom) laboratory. The present article describes the spatial distributions and evaluated clustering of the FOC submissions from poultry farms at the global, local, and focal levels between 2006 and 2007 epidemic in Nigeria. Spatial statistics evaluating clustering of the FOC submissions were implemented using the Moran{\textquoteright}s I test, the purely spatial cluster analysis with the SaTScan Poisson model, and the Bithell's linear score test. A significant global clustering of the FOC submissions was observed. Significant local clusters of submissions were observed in the North-East, North-Central, and South-West zones. There was significant decline in FOC submissions with increasing distance from NVRI-Vom. These results indicated that the geographic area of influence of the FOC submission program in Nigeria was limited to regions closer to the diagnostic laboratory. This work provides a detailed insight into the surveillance activities during the HPAI outbreaks in Nigeria, and should assist policy-makers and field veterinarians to improve the effectiveness of national eradication plans in the face of any outbreak of animal diseases.",

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Distribuzione geografica dei campioni infetti dal virus H5n1 di influenza aviaria sottoposti ad analisi durante le fasi di introduzione e circolazione del virus in Nigeria tra il 2006 e il 2007

Abstract

Bibliographical note

Keywords

UN SDGs

Access

OpenUrl availability

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