title: Cross immunity between strains of Cowdria ruminantium.
abstract: Cross immunity tests with strains of Cowdria ruminantium from South Africa, the Sudan, São Tomé and Nigeria failed to demonstrate antigenic differences. The antibiotic ampicillin showed no activity against heartwater.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology / Q000627:therapeutic use; D000818:Animals; D001266:Atlantic Islands; D000939:Epitopes; D006041:Goats; D006357:Heartwater Disease / Q000188:drug therapy / Q000276:immunology*; D007109:Immunity; D007114:Immunization / Q000662:veterinary; D009549:Nigeria; D010403:Penicillin Resistance; D012287:Rickettsiaceae / Q000187:drug effects / Q000276:immunology*; D013019:South Africa; D013045:Species Specificity; D013397:Sudan
chemical_list: D000939:Epitopes; D000667:Ampicillin