The role of neighboring infected cattle in bovine leukemia virus transmission risk

A cohort study was conducted to evaluate the risk of bovine leukemia virus (BLV) transmission to uninfected cattle by adjacent infected cattle in 6 dairy farms. Animals were initially tested in 2010–2011 using a commercial ELISA kit. Uninfected cattle were repeatedly tested every 4 to 6 months until...

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Detalles Bibliográficos
Autores principales: KOBAYASHI, Sota, TSUTSUI, Toshiyuki, YAMAMOTO, Takehisa, HAYAMA, Yoko, MUROGA, Norihiko, KONISHI, Misako, KAMEYAMA, Ken-ichiro, MURAKAMI, Kenji
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Japanese Society of Veterinary Science 2015
Materias:
Virology
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4527511/
https://www.ncbi.nlm.nih.gov/pubmed/25754652
http://dx.doi.org/10.1292/jvms.15-0007
Descripción
Sumario:A cohort study was conducted to evaluate the risk of bovine leukemia virus (BLV) transmission to uninfected cattle by adjacent infected cattle in 6 dairy farms. Animals were initially tested in 2010–2011 using a commercial ELISA kit. Uninfected cattle were repeatedly tested every 4 to 6 months until fall of 2012. The Cox proportional hazard model with frailty showed that uninfected cattle neighboring to infected cattle (n=53) had a significant higher risk of seroconversion than those without any infected neighbors (n=81) (hazard ratio: 12.4, P=0.001), implying that neighboring infected cattle were a significant risk factor for BLV transmission. This finding provides scientific support for animal health authorities and farmers to segregate infected cattle on farms to prevent spread of BLV.

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