found: Work cat.: Maedi-visna and related diseases, c1990(maedi-visna lentivirus infection of sheep) p. 6 (Now maedi and visna are known to be two different manifestations of an infection with the same virus and are therefore referred to as maedi-visna disease.)
found: Black's vet. dict.:p. 472 (maedi/visna)
found: Concise vet. dict.(maedi/visna, progressive disease of sheep caused by lentivirus and characterized by respiratory insufficiency (maedi) or nervous signs (visna); visna see maedi/visna)
found: Merck vet.:p. 922 (progressive pneumonia of sheep, Maedi-Visna, Laikipia disease, Zwoegersiekte; chronic viral disease of sheep and goats; RNA virus)
notfound: Web. 3
