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Mycoplasma gallisepticum Isolated from House Finches (Carpodacus mexicanus) with Conjunctivitis

David H. Ley, J. Edward Berkhoff and Judith M. McLaren
Avian Diseases
Vol. 40, No. 2 (Apr. - Jun., 1996), pp. 480-483
DOI: 10.2307/1592250
Stable URL: http://www.jstor.org/stable/1592250
Page Count: 4
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Mycoplasma gallisepticum Isolated from House Finches (Carpodacus mexicanus) with Conjunctivitis
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Abstract

An epornitic of conjunctivitis in free-flying house finches (Carpodacus mexicanus) occurred in several mid-Atlantic and eastern states of the USA in 1994. Clinical signs and gross lesions ranged from mild to severe unilateral or bilateral conjunctival swelling with serous to mucopurulent drainage and nasal exudate. Microscopic lesions consisted of chronic lymphoplasmacytic conjunctivitis, rhinitis, and sinusitis. Notably slow-growing mycoplasmas were isolated from conjunctival and/or infraorbital sinus swabs from clinically affected birds. Isolates were identified as Mycoplasma gallisepticum (MG) by direct immunofluorescence and DNA probe-based polymerase chain reactions. These findings suggest that MG is the likely etiology for this epornitic of conjunctivitis in house finches. /// Se presentó una epizootia de conjuntivitis en pinzones caseros (Carpodacus mexicanus) en varios estados de Estados Unidos en el año 1994. Los signos clínicos y las lesiones macroscópicas incluyeron la inflamación conjuntival uni o bilateral, variando de leve a severa, con presencia de exudado seroso o mucopurulento ocular y nasal. Se aislaron micoplasmas de lento crecimiento a partir de hisopos de la conjuntiva y del seno infraorbital de las aves clínicamente afectadas. Las cepas fueron identificadas como Mycoplasma gallisepticum (MG) por inmunofluorescencia directa y mediante la reacción en cadena por la polimerasa con sondas de DNA. Estos resultados sugieren que el MG fue el agente etiológico de esta epizootia en pinzones caseros.

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