title: Maedi-visna virus infection in commercial flocks of indigenous sheep in Britain.
abstract: The recent identification of maedi-visna virus infection in three commercial flocks of indigenous sheep in Britain is described. In one flock the evidence suggested that overt clinical disease was present. The implications of the findings are discussed.
mesh_terms: D000818:Animals; D005260:Female; D008297:Male; D011021:Pneumonia, Progressive Interstitial, of Sheep / Q000175:diagnosis / Q000453:epidemiology* / Q000635:transmission; D012756:Sheep; D006113:United Kingdom