title: Heartwater: cross-immunity studies with strains of Cowdria ruminantium isolated in West and South Africa.
mesh_terms: D000818:Animals; D003429:Cross Reactions; D006041:Goats / Q000276:immunology*; D006357:Heartwater Disease / Q000276:immunology / Q000517:prevention & control*; D009549:Nigeria; D012287:Rickettsiaceae / Q000276:immunology*; D013019:South Africa