Journal of Veterinary Medical Science
Online ISSN : 1347-7439
Print ISSN : 0916-7250
ISSN-L : 0916-7250

This article has now been updated. Please use the final version.

The role of neighboring infected cattle in bovine leukemia virus transmission risk
Sota KOBAYASHIToshiyuki TSUTSUITakehisa YAMAMOTOYoko HAYAMANorihiko MUROGAMisako KONISHIKen-ichiro KAMEYAMAKenji MURAKAMI
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JOURNAL FREE ACCESS Advance online publication

Article ID: 15-0007

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Abstract

A cohort study was conducted to evaluate the risk of bovine leukemia virus (BLV) transmission to uninfected cattle by adjacent infected cattle in six dairy farms. Animals were initially tested in 2010–2011 using a commercial ELISA kit. Uninfected cattle were repeatedly tested every four to six 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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© 2015 by the Japanese Society of Veterinary Science

この記事はクリエイティブ・コモンズ [表示 - 非営利 - 改変禁止 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ja
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