A phase II, randomized, safety and immunogenicity study of a re-derived, live-attenuated dengue virus vaccine in healthy adults.

A phase II, randomized, safety and immunogenicity study of a re-derived, live-attenuated dengue virus vaccine in healthy adults.
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对健康成人再衍生减毒活登革热病毒疫苗进行的 II 期随机、安全性和免疫原性研究。

DOI:
10.4269/ajtmh.2012.12-0361
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发表时间:
2013-01
期刊:
The American journal of tropical medicine and hygiene
影响因子:
--
通讯作者:
Innis BL
Innis BL
中科院分区:
其他
文献类型:
--
作者:
Thomas SJ;Eckels KH;Carletti I;De La Barrera R;Dessy F;Fernandez S;Putnak R;Toussaint JF;Sun W;Bauer K;Gibbons RV;Innis BL

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在一项针对 86 名健康成年人的安慰剂对照、随机、观察者盲法 II 期试验中,对使用从前体疫苗重新衍生的主种子生产的新型活四价登革热病毒 (DENV) 疫苗的两种配方和作为对照的相同前体疫苗进行了比较。两剂疫苗间隔 6 个月接种;向一部分人提供第三剂。接种疫苗后报告的类似登革热疾病的症状和体征为轻度至中度、短暂性,并且除皮疹外,新登革热病毒疫苗和安慰剂接种者的出现频率相似。登革热和疫苗相关的严重不良事件均未报告。第一剂 DENV 疫苗具有中等免疫原性;第二剂增加了中和抗体反应的效力和广度。在未接种的受试者中,对新制剂的四价反应率为 60% 和 66.7%。第三剂并没有增加四价抗体率。新的 DENV 候选疫苗值得进一步评估。
Two formulations of a new live tetravalent dengue virus (DENV) vaccine produced using re-derived master seeds from a precursor vaccine and that same precursor vaccine as a control were compared in a placebo-controlled, randomized, observer-blind, phase II trial of 86 healthy adults. Two vaccine doses were administered 6 months apart; a third dose was offered to a subset. Symptoms and signs of dengue-like illness reported after vaccination were mild to moderate, transient, and occurred with similar frequency among recipients of the new DENV vaccine and placebo, except for rash. Neither dengue nor vaccine-related serious adverse events were reported. The first DENV vaccine dose was moderately immunogenic; the second dose increased the potency and breadth of the neutralizing antibody response. Tetravalent response rates to the new formulations were 60% and 66.7% in unprimed subjects. A third dose did not increase tetravalent antibody rates. The new DENV vaccine candidates merit additional evaluation.
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