Variation in carrier rates of Pasteurella haemolytica in sheep flocks. I. Normal flocks.
D000818:Animals; D002353:Carrier State / Q000662:veterinary*; D010325:Pasteurella / Q000302:isolation & purification*; D010326:Pasteurella Infections / Q000150:complications / Q000662:veterinary; D011014:Pneumonia / Q000150:complications / Q000662:veterinary; D012606:Scotland; D012621:Seasons; D012703:Serotyping; D012756:Sheep; D012757:Sheep Diseases / Q000382:microbiology*; D013223:Statistics as Topic; D014887:Weather