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maedi

   Also found in: Wikipedia 0.02 sec.
maedi/visna virus,
a lentivirus that is the causal agent of a type of pneumonia in sheep.

maedi
a chronic pneumonia of sheep caused by a lentivirus, which also causes visna when it invades the brain of sheep. In maedi the characteristic features are a prolonged incubation period of more than 2 years, a progressive pneumonia which lasts for about 6 months, and, at the inevitable death, an abnormally high density and heaviness of the lungs. Called also maedi-visna, Graff-Reinert disease, la bouhite, ovine progressive pneumonia and lymphoid interstitial pneumonia.


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