title: Study on the etiologic role of bovine respiratory syncytial virus in pneumonia of dairy calves.
abstract: Bovine respiratory syncytial virus (BRSV) was the viral agent most commonly identified in 14 epizootics of pneumonia in dairy calves. A microtiter serum-virus neutralization test proved to be the best means of identifying involvement of BRSV; seroconversion (fourfold or greater rise in titer) was demonstrated in 10 of the 14 epizootics. Only limited involvement of bovine viral diarrhea virus, infectious bovine rhinotracheitis virus, parainfluenza 3 virus, and bovine adenovirus type 3 was recognized. Pasteurella multocida was isolated in 12 of 14 epizootics, and Pasteurella haemolytica in 4 of 14 epizootics. Mycoplasmal and ureaplasmal agents were isolated in all 14 epizootics.
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology* / Q000382:microbiology / Q000473:pathology; D005260:Female; D008168:Lung / Q000473:pathology; D011024:Pneumonia, Viral / Q000473:pathology / Q000662:veterinary*; D012136:Respiratory Syncytial Viruses; D010253:Respirovirus Infections / Q000473:pathology / Q000662:veterinary*