title: Some observations on the epidemiology of bovine leucosis virus infection in a large dairy herd.
abstract: Bovine leucosis infection rates were calculated for two years in a naturally infected dairy herd in which serologically positive animals were not preferentially culled. Transmission of infection was found to occur mainly during the winter housing period. No variation in susceptibility to infection with age was found and young animals did not show a prolonged time from infection to sero-conversion.
mesh_terms: D000367:Age Factors; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000635:transmission; D005260:Female; D007938:Leukemia / Q000453:epidemiology / Q000635:transmission / Q000662:veterinary*; D001909:Leukemia Virus, Bovine; D008297:Male; D012621:Seasons