Development and testing of a field diagnostic assay for peste des petits ruminants virus.

Development and testing of a field diagnostic assay for peste des petits ruminants virus.
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DOI:
10.1111/tbed.12266
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发表时间:
2014-10
影响因子:
4.3
通讯作者:
Baron MD
Baron MD
中科院分区:
农林科学2区
文献类型:
--
作者:
Baron J;Fishbourne E;Couacy-Hyman E;Abubakar M;Jones BA;Frost L;Herbert R;Chibssa TR;Van't Klooster G;Afzal M;Ayebazibwe C;Toye P;Bashiruddin J;Baron MD

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我们已经开发了一种免疫层析试验,用于在田间条件下诊断小反刍兽疫(PPR)。该诊断分析已在实验室和象牙海岸、巴基斯坦、埃塞俄比亚和乌干达的实地条件下进行了测试。该测试是在浅表拭子样本(眼或鼻)上进行的,相对于PCR,其灵敏度为84%。所有鼻和眼样本的特异性为95%。该试验检出了低至103 TCID50(50%组织培养感染剂量)的细胞培养生长病毒,并检出了代表小反刍兽疫病毒所有四种已知遗传谱系的病毒分离株。最早在感染后4天,在临床体征极轻微时,可在动物拭子中检出病毒。从现场试验的反馈是一致的积极,这表明,这种诊断工具可能是有用的,目前的努力,以控制PPR的传播。
We have developed an immunochromatographic test for the diagnosis of peste des petits ruminants (PPR) under field conditions. The diagnostic assay has been tested in the laboratory and also under field conditions in Ivory Coast, Pakistan, Ethiopia and Uganda. The test is carried out on a superficial swab sample (ocular or nasal) and showed a sensitivity of 84% relative to PCR. The specificity was 95% over all nasal and ocular samples. The test detected as little as 103 TCID50 (50% tissue culture infectious doses) of cell culture-grown virus, and detected virus isolates representing all four known genetic lineages of peste des petits ruminants virus. Virus could be detected in swabs from animals as early as 4 days post-infection, at a time when clinical signs were minimal. Feedback from field trials was uniformly positive, suggesting that this diagnostic tool may be useful for current efforts to control the spread of PPR.
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