title: Concern over maedi visna breakdowns.
authors.affiliation: Premium Sheep and Goat Health Schemes, SAC Consulting Veterinary Services, Mill of Craibstone, Aberdeen AB21 9TB.
authors.forename: Catriona
authors.initials: C
authors.lastname: Ritchie
authors.affiliation: SAC Consulting Veterinary Services, Allan Watt Building, Bush Estate, Penicuik, Midlothian EH26 0QE.
authors.forename: Brian
authors.initials: B
authors.lastname: Hosie
mesh_terms: D000818:Animals; D012756:Sheep; D006113:United Kingdom / Q000453:epidemiology; D016182:Visna / Q000453:epidemiology*; D014790:Visna-maedi virus / Q000302:isolation & purification*