Susceptibility and Status of Avian Influenza in Ostriches
- 10 February 2016
- journal article
- Published by American Association of Avian Pathologists (AAAP) in Avian Diseases
- Vol. 60 (1s) , 286-95
Abstract
SUMMARY. The extensive nature of ostrich farming production systems bears the continual risk of point introductions of avian influenza virus (AIV) from wild birds, but immune status, management, population density, and other causes of stress in ostriches are the ultimate determinants of the severity of the disease in this species. From January 2012 to December 2014, more than 70 incidents of AIV in ostriches were reported in South Africa. These included H5N2 and H7N1 low pathogenicity avian influenza (LPAI) in 2012, H7N7 LPAI in 2013, and H5N2 LPAI in 2014. To resolve the molecular epidemiology in South Africa, the entire South African viral repository from ostriches and wild birds from 1991 to 2013 (n = 42) was resequenced by next-generation sequencing technology to obtain complete genomes for comparison. The phylogenetic results were supplemented with serological data for ostriches from 2012 to 2014, and AIV-detection data from surveillance of 17 762 wild birds sampled over the same period. Phylogenetic... RESUMEN. Susceptibilidad y situación de la influenza aviar en avestruces. La extensa naturaleza de los sistemas de producción de avestruz enfrenta el riesgo continuo de la presentación del virus de la influenza aviar (AIV) originado de aves silvestres, pero el estado inmunológico, el manejo, la densidad de población, y otras causas de estrés en avestruces son determinantes importantes en la severidad de esta enfermedad en esta especie. De enero del 2012 a diciembre del 2014, se registraron más de 70 casos de virus de influenza aviar en avestruces en Sudáfrica. Estos virus incluyeron virus de baja patogenicidad H5N2 y H7N1 en el año 2012, virus de baja patogenicidad H7N7 en el año 2013 y virus de baja patogenicidad H5N2 en 2014. Para resolver la epidemiología molecular en Sudáfrica, todo el repositorio de muestras virales de avestruces y aves silvestres en Sudáfrica del año 1991 al 2013 (n = 42) fue re-analizado por análisis de secuencias de próxima generación para obtener genomas completos para su compara...Keywords
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