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An Outbreak of Influenza (H1N1) in Turkey Breeder Hens

M. D. Ficken, J. S. Guy and E. Gonder
Avian Diseases
Vol. 33, No. 2 (Apr. - Jun., 1989), pp. 370-374
DOI: 10.2307/1590860
Stable URL: http://www.jstor.org/stable/1590860
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
An Outbreak of Influenza (H1N1) in Turkey Breeder Hens
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Abstract

Outbreaks of influenza were diagnosed in two turkey breeder flocks on the same premises in eastern North Carolina during the "dark-out" period of recycling for a second lay. Clinical history included increased mortality from acute death with no apparent predisposing illness. Mortality attributed to the disease was 4.5% in one flock and 3.3% in the other. Necropsy findings included severe diffuse congestion and edema of both lungs, with little or no pleural exudate. Spleens were moderately to markedly enlarged and mottled, and kidneys were swollen and congested. Microscopic lesions included moderate to severe serofibrinous pneumonia with severe pulmonary congestion. Splenic changes included fibrin deposition and severe congestion, and severe congestion was noted in kidneys. Influenza virus (H1N1) was isolated from pools of tissues including lung, spleen, liver, and kidney, and both flocks seroconverted to influenza (H1N1) virus. /// Se diagnosticaron brotes de influenza en dos parvadas de pavas reproductoras localizadas en la misma granja en el oriente del estado de Carolina del Norte, E.U.A. El brote ocurrió durante el período de muda forzada o reciclaje para un segundo período de postura. La historia clínica incluía un aumento de mortalidad aguda sin aparente enfermedad predisponente. La mortalidad atribuida a la enfermedad fue de 4.5% en un lote y 3.3% en el otro. A la necropsia se observó severa congestión difusa y edema de ambos pulmones, sin presencia de exudado pleural o con pequeñas cantidades del mismo. Los bazos estaban ligera o excesivamente aumentados de tamaño y moteados. Los riñones estaban inflamados y congestionados. Las lesiones microscópicas incluyeron neumonía serofibrinosa moderada o severa y fuerte congestión pulmonar. Se encontró deposición de fibrina en el bazo y congestión severa en este órgano y en el riñón. Se aisló un virus de influenza (H1N1) a partir de varios tejidos incluyendo el pulmón, bazo, hígado y riñón. Ambos grupos mostraron seroconversión al virus de la influenza (H1N1).

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