title: Serotype-specific resistance to nasal colonization by Pasteurella haemolytica in cattle.
abstract: Vaccination of calves with a Pasteurella haemolytica serotype 1 antigen preparation elicited a serotype-specific inhibition of nasal colonization by P haemolytica under field conditions. Inhibition was evidenced by a low frequency of nasal colonizations and by relatively few P haemolytica serotype 1 organisms isolated from vaccinated calves. The study comprised 3 field trials, each on a separate year, and included 480 calves.
mesh_terms: D000818:Animals; D000942:Antigens, Bacterial / Q000276:immunology*; D001428:Bacterial Vaccines / Q000276:immunology*; D002417:Cattle / Q000276:immunology* / Q000382:microbiology; D002418:Cattle Diseases / Q000276:immunology; D009666:Nose / Q000382:microbiology*; D010325:Pasteurella / Q000276:immunology*; D010326:Pasteurella Infections / Q000276:immunology / Q000662:veterinary; D012141:Respiratory Tract Infections / Q000276:immunology / Q000662:veterinary; D014611:Vaccination / Q000662:veterinary*
chemical_list: D000942:Antigens, Bacterial; D001428:Bacterial Vaccines