title: Specific immunity in farm animals to heartwater.
abstract: The duration of immunity to heartwater normally varies from 6 months to 4 years. In Angora goats it may be difficult to produce a specific immune response with vaccination. Humoral immunity does not appear to play a role in the development of immunity. It has been suggested that cellular immunity may play a role, but the actual mechanism involved remains obscure. The specific immune response developing in farm animals following infection with Cowdria ruminantium is reviewed.
authors.affiliation: Department of Infectious Diseases and Public Health, Faculty of Veterinary Science, Medical University of Southern Africa, Medunsa.
authors.forename: C G
authors.initials: CG
authors.lastname: Stewart
mesh_terms: D000818:Animals; D002417:Cattle / Q000276:immunology*; D006041:Goats / Q000276:immunology*; D006357:Heartwater Disease / Q000276:immunology*; D007110:Immunity, Active; D012756:Sheep / Q000276:immunology*