PRESENCE OF AVIAN INFLUENZA VIRUS IN WILD BIRDS IN THE WETLANDS OF PUERTO VIEJO, LIMA

The objective of the study was to detect the presence of avian influenza (AI) virus in wild aquatic birds found in Puerto Viejo wetlands, Lima-Peru. Fresh faecal samples (n=900) from 18 species of wild birds were collected from April 2008 to February 2009. Samples were analyzed by virus isolation in...

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Bibliographic Details
Published in:Revista de Investigaciones Veterinarias del Perú
Main Authors: Segovia H., Karen, Icochea D., Eliana, González V., Rosa, Ghersi, Bruno, González Z., Armando
Format: Article in Journal/Newspaper
Language:Spanish
Published: Universidad Nacional Mayor de San Marcos, Facultad de Medicina Veterinaria 2013
Subjects:
Virus de influenza aviar
aves silvestres
Humedales de Puerto Viejo
aislamiento viral
Avian influenza virus
wild birds
Puerto Viejo wetlands
viral isolation
Baja
Arenaria interpres
Online Access:https://revistasinvestigacion.unmsm.edu.pe/index.php/veterinaria/article/view/1672
https://doi.org/10.15381/rivep.v24i1.1672
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Summary:The objective of the study was to detect the presence of avian influenza (AI) virus in wild aquatic birds found in Puerto Viejo wetlands, Lima-Peru. Fresh faecal samples (n=900) from 18 species of wild birds were collected from April 2008 to February 2009. Samples were analyzed by virus isolation in SPF embryonated chicken eggs. Seven strains of low pathogenicity AI viruses subtype H12N5 were isolated; six from the migratory species Arenaria interpres, and one from the resident species Fulica ardesiaca. The technique of risk assessment using Monte Carlo Simulation (program @ risk) indicated that the probability of finding the AI virus in wild birds from Puerto Viejo wetlands was 0.88% with a confidence interval of 0.15 to 2.53%. The results of the study showed that wild birds from Puerto Viejo wetlands constitute a reservoir for avian influenza virus in Peru. El objetivo del estudio fue determinar la presencia del virus de influenza aviar (IA) en aves silvestres presentes en los Humedales de Puerto Viejo, en el departamento de Lima. Novecientas muestras de heces frescas de 18 especies de aves silvestres fueron colectadas desde abril de 2008 hasta febrero de 2009. Dichas muestras se analizaron mediante aislamiento viral en huevos embrionados de pollo SPF. Se logró aislar siete cepas de virus de IA de baja patogenicidad del subtipo H12N5 (seis cepas procedentes de la especie migratoria Arenaria interpres y una de la especie residente Fulica ardesiaca). La técnica de evaluación de riesgo mediante la simulación de Monte Carlo (programa @risk) indicó que la probabilidad de encontrar el virus de Influenza A en las aves silvestres de los Humedales de Puerto Viejo es de 0.88% con un intervalo de confianza de 0.15 a 2.53%. Los resultados demuestran que las aves silvestres de los Humedales de Puerto Viejo constituyen un reservorio para los virus de influenza aviar en el Perú.

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