Farm- and flock-level risk factors associated with Highly Pathogenic Avian Influenza outbreaks on small holder duck and chicken farms in the Mekong Delta of Viet Nam

Henning, Kate; Henning, Joerg; Morton, John M.; Long, Nguyễn Thành; Ha, Nguyen Truc; Meers, J.

doi:10.1016/j.prevetmed.2009.05.027

Cited by 68 publications

(73 citation statements)

References 14 publications

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“…Restricting people's movement in the farms limits the risk of introducing infectious agents into flocks. This is consistent with the study of Alhaji and Odetokun (2011) and Henning et al, (2009). Shama (2010 reports that people who come into poultry houses can introduce very serious diseases.…”

Section: Biosecurity Measures Practiced By Farmerssupporting

confidence: 93%

Bio-security measures employed by poultry farmers in Enugu State Nigeria

Eze¹,

Chah²,

Uddin³

et al. 2018

jae

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Section: Biosecurity Measures Practiced By Farmerssupporting

confidence: 93%

Bio-security measures employed by poultry farmers in Enugu State Nigeria

Eze¹,

Chah²,

Uddin³

et al. 2018

jae

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“…In spite of these limitations, the present study made it possible to identify risk factors associated with exposure of poultry to AIV. The study found higher AIV seroprevalence in palmipeds (ducks and geese) than in chickens, which is consistent with findings by other serological surveys carried out in unvaccinated birds raised in small-scale farms of Indonesia (Santhia et al, 2009) or Vietnam (Henning et al, 2009;Desvaux et al, 2012). The reason why this should be so can be explained.…”

Section: Discussionsupporting

confidence: 90%

Landscape attributes driving avian influenza virus circulation in the Lake Alaotra region of Madagascar

Guerrini¹,

Paul

Léger

et al. 2014

Geospat Health

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Abstract. While the spatial pattern of the highly pathogenic avian influenza H5N1 virus has been studied throughout Southeast Asia, little is known on the spatial risk factors for avian influenza in Africa. In the present paper, we combined serological data from poultry and remotely sensed environmental factors in the Lake Alaotra region of Madagascar to explore for any association between avian influenza and landscape variables. Serological data from cross-sectional surveys carried out on poultry in 2008 and 2009 were examined together with a Landsat 7 satellite image analysed using supervised classification. The dominant landscape features in a 1-km buffer around farmhouses and distance to the closest water body were extracted. A total of 1,038 individual bird blood samples emanating from 241 flocks were analysed, and the association between avian influenza seroprevalence and these landcape variables was quantified using logistic regression models. No evidence of the presence of H5 or H7 avian influenza subtypes was found, suggesting that only low pathogenic avian influenza (LPAI) circulated. Three predominant land cover classes were identified around the poultry farms: grassland savannah, rice paddy fields and wetlands. A significant negative relationship was found between LPAI seroprevalence and distance to the closest body of water. We also found that LPAI seroprevalence was higher in farms characterised by predominant wetlands or rice landscapes than in those surrounded by dry savannah. Results from this study suggest that if highly pathogenic avian influenza H5N1 virus were introduced in Madagascar, the environmental conditions that prevail in Lake Alaotra region may allow the virus to spread and persist.

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“…Esto representa un riesgo potencial para la transmisión de enfermedades, ya que tanto pavos como gansos y otras aves domésticas son portadores y diseminan enfermedades como Newcastle, laringotraqueitis, bronquitis infecciosa y viruela por prolongados periodos de tiempo (7). Además, la mezcla de especies aumenta la transmisión del virus IAAP/ H5N1 (20).…”

Section: Animales De Diferentes Especies Dentro Del Criaderounclassified

“…El 100 % de ellos no maneja registros del personal que los visita, aún a sabiendas de que la mayoría de personas que los visita son criadores que no hacen caso a las recomendaciones que afirman que en el 90 % de las infecciones microbianas, el hombre actúa como transmisor (15), y que restringiendo el flujo de personas se limita el riesgo de introducción de agentes infecciosos en la explotación (19,20).…”

Section: Ingreso De Visitantesunclassified

Estado de bioseguridad en criaderos de gallos de pelea (Gallus gallus) en Yacuanquer, Nariño, Colombia

Martínez¹,

Melo²,

Velásquez³

et al. 2015

Rev. Med. Vet.

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En Colombia se regula y controla sanitariamente la actividad avícola; por ello los criadores de gallos de pelea deberían regirse; pero hasta la fecha no se han realizado estudios sobre las medidas de bioseguridad que implementan, lo cual se convierte en una creciente preocupación por el impacto sanitario que puede tener sobre la industria avícola. El objetivo del trabajo fue evaluar el conocimiento y la aplicación de las normas de bioseguridad en criaderos de gallos de pelea (Gallus gallus) del municipio de Yacuanquer, Nariño, Colombia, según lo reglamentado en la Resolución 3642 del 21 de agosto de 2013, expedida por el Instituto Colombiano Agropecuario. Se encuestaron 157 criadores, de los cuales el 88,54 % desconoce el concepto de bioseguridad y no controla el ingreso de personal ajeno a la explotación; el 61,15 % no desinfecta locaciones; el 100 % no mantiene pediluvios a la entrada de la explotación ni realizan labores de desinfección de los automóviles; solo el 23,57 % realiza vacío sanitario dentro de sus criaderos y el 63,7 % no instaura un periodo de cuarentena a los nuevos ejemplares que adquieren; el 64,33 % no vacuna y el 98,09 % no cuenta con asesoría veterinaria. En conclusión, se pudo establecer que los criadores de gallos de pelea en Yacuanquer desconocen y no han implementado medidas de bioseguridad, lo que representa un factor de riesgo para la industria avícola de la región.

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Farm- and flock-level risk factors associated with Highly Pathogenic Avian Influenza outbreaks on small holder duck and chicken farms in the Mekong Delta of Viet Nam

Cited by 68 publications

References 14 publications

Bio-security measures employed by poultry farmers in Enugu State Nigeria

Bio-security measures employed by poultry farmers in Enugu State Nigeria

Landscape attributes driving avian influenza virus circulation in the Lake Alaotra region of Madagascar

Estado de bioseguridad en criaderos de gallos de pelea (Gallus gallus) en Yacuanquer, Nariño, Colombia

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