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Lancet:4价登革热疫苗TAK-003用于4-16岁儿童疗效评估

2020-05-06 MedSci原创 MedSci原创

4价登革热疫苗TAK-003对儿童登革热具有良好的耐受性和有效性,其效果与免疫前血清状态无关

革热病疫苗,特别对儿童有效的疫苗,仍是研发的热点之一,近日研究人员评估了四价登革热减毒活疫苗(TAK-003)对4-16岁健康儿童的疗效、安全性和免疫原性。

本次研究为III期临床研究,在巴西,哥伦比亚,多米尼加,尼加拉瓜,巴拿马,菲律宾,斯里兰卡和泰国开展,接种疫苗后随访期长达18个月。4-16岁的健康儿童随机接种两剂TAK-003或两剂安慰剂,间隔3个月。通过血清型特异性RT-PCR 对发热病人进行病毒学登革热(VCD )检测。

20099名参与者。统计发现,疫苗有效率为80.2%,TAK-003组VCD患者61例,安慰剂组149例。在次要终点评估中,总疫苗效力为73.3%。二级终点分析显示,基线血清学阳性患者有效率为76.1%,基线血清学阴性患者有效率为66.2%,对住院登革热有效率为90.4%,对登革热出血热有效率为85.9%。疗效存在血清学差异,DENV1有效率为69.8%,DENV2型为95.1%,DENV3型为48.9%,DENV4型为51.0%。组间严重不良事件率相当(4.0 vs 4.8%),感染是最常见的不良事件。

研究认为,4价登革热疫苗TAK-003对儿童登革热具有良好的耐受性和有效性,其效果与免疫前血清状态无关。

原始出处:

Shibadas Biswal et al. Efficacy of a tetravalent dengue vaccine in healthy children aged 4–16 years: a randomised, placebo-controlled, phase 3 trial. Lancet. March 17, 2020.

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    2020-05-06 内科新手

    谢谢梅斯提供这么好的信息,学到很多

    0

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    2020-05-06 goodbing

    顶刊就是不一样,质量很高,内容精彩!学到很多

    0

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