title: Variation in carrier rates of Pasteurella haemolytica in sheep. II. Diseased flocks.
mesh_terms: D000818:Animals; D002353:Carrier State / Q000453:epidemiology / Q000662:veterinary*; D006385:Hemagglutination Inhibition Tests; D010326:Pasteurella Infections / Q000175:diagnosis / Q000453:epidemiology / Q000662:veterinary*; D012703:Serotyping; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology*