title: Colostral transmission of bluetongue virus nucleic acid among newborn dairy calves in California.
abstract: There have been substantial recent changes in the global distribution and nature of bluetongue virus (BTV) infection of ungulates, perhaps as a result of climate change. To evaluate the epidemiology of BTV infection in California, an area historically endemic for the virus, we monitored newborn dairy calves at different sites for 1 year for the presence of BTV RNA and virus-specific antibodies. The data confirm both localized, vector-mediated, seasonal transmission of BTV as well as dissemination of BTV and/or viral nucleic acid to newborn calves following ingestion of colostrum.
authors.affiliation: Department of Pathology, Microbiology and Immunology, University of California, Davis, CA, USA.
authors.forename: C E
authors.initials: CE
authors.lastname: Mayo
authors.forename: B M
authors.initials: BM
authors.lastname: Crossley
authors.forename: S K
authors.initials: SK
authors.lastname: Hietala
authors.forename: I A
authors.initials: IA
authors.lastname: Gardner
authors.forename: R E
authors.initials: RE
authors.lastname: Breitmeyer
authors.forename: N James
authors.initials: NJ
authors.lastname: Maclachlan
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D000914:Antibodies, Viral / Q000097:blood / Q000276:immunology; D001819:Bluetongue / Q000453:epidemiology* / Q000517:prevention & control / Q000635:transmission*; D001820:Bluetongue virus / Q000235:genetics / Q000276:immunology*; D002140:California / Q000453:epidemiology; D002417:Cattle; D003126:Colostrum / Q000821:virology; D003612:Dairying; D005260:Female; D018445:Infectious Disease Transmission, Vertical; D011247:Pregnancy; D015995:Prevalence; D012367:RNA, Viral / Q000302:isolation & purification*; D013997:Time Factors
chemical_list: D000914:Antibodies, Viral; D012367:RNA, Viral