Chinese border disease virus strain JSLS12-01 infects piglets and down-regulates the antibody responses of classical swine fever virus C strain vaccination

文献类型： 外文期刊

第一作者： Mao, Li

作者： Mao, Li;Li, Wenliang;Liu, Xia;Hao, Fei;Yang, Leilei;Deng, Jiawu;Zhang, Wenwen;Jiang, Jieyuan;Mao, Li;Li, Wenliang;Liu, Xia;Hao, Fei;Yang, Leilei;Deng, Jiawu;Zhang, Wenwen;Jiang, Jieyuan;Mao, Li;Li, Wenliang;Liu, Xia;Hao, Fei;Yang, Leilei;Deng, Jiawu;Zhang, Wenwen;Jiang, Jieyuan;Liu, Xia;Deng, Jiawu;Wei, Jianzhong

作者机构：

关键词： BDV;Pig;Infection;CSFV;Antibody response

期刊名称：VACCINE （ 影响因子：3.641； 五年影响因子：3.816 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： During 2012 and 2013, several border disease virus (BDV) strains were identified from Chinese goat and sheep herds. At the same time, pigs from the same areas were found to be seropositive to BDV by ELISA, without showing clinical signs (unpublished data). To examine the susceptibility of pigs to the Chinese BDV strains, BDV isolate JSLS12-01, isolated from naturally infected sheep, was used to infect pigs. Antibody responses, viremia, clinical signs and pathological changes of the infected animals were examined. It confirmed that the current BDV strain could infect the domestic pigs, the animals showed viremia during 4 to 14 days post infection (dpi) and sero-conversion from 14 dpi; no clinical and pathological changes were observed. In addition, CSFV maternal antibody did not influence BDV infection. Subsequently, pigs were infected with the BDV isolate and vaccinated with Hog cholera lapinized virus (HCLV) 21 days later to determine the effect of BDV infection on antibody induction of CSFV vaccination. The specific CSFV antibody and neutralizing antibody titers of the BDV infected group remained negative after the primary vaccination. Even after the boost vaccination, they were still significantly lower than those of the uninfected groups (p<0.05). These results indicated that BDV infection could down-regulate the antibody responses of CSFV C-strain vaccination. It should be paid attention that BDV prevalence in pig herds and in live vaccines might hamper the vaccination of CSF. (C) 2015 Elsevier Ltd. All rights reserved.

分类号： R392

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