Demyelinating leukoencephalomyelitis of sheep caused by the VISNA-MAEDI VIRUS. It
is similar to but not the same as SCRAPIE.
https://www.blv.admin.ch/blv/fr/home/tiere/tierseuchen/uebersicht-seuchen/alle-tierseuchen/visna-maedi.html 2016 false Switzerland Italian French German visna pneumonia, progressive interstitial, of sheep visna-maedi virus sheep scientific and technical information