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Lancet Infect Dis:氢氧化铝吸附脊髓灰质炎疫苗有效预防1-3型脊髓灰质炎

2017-04-26 zhangfan MedSci原创

接种1/10剂量的 IPV-Al疫苗2剂或3剂即可达到较好的免疫预防效果

成本和供应的因素是发展中国家灭活脊髓灰质炎疫苗(IPV)应用的主要限制因素,在这部分国家使用氢氧化铝(AL)吸附疫苗是一种不错的选择。研究人员近日就三种剂量的氢氧化铝吸附脊髓灰质炎疫苗(IPV-Al)与标准的灭活脊髓灰质炎疫苗效果进行了比较。

这是一项在多米尼加共和国进行的非劣效性,观察者盲,随机,对照,单中心II期试验。以前未接种脊髓灰质炎疫苗6周健康婴儿参与研究,研究包括四组,分别为1/3 IPV-Al组,1/5 IPV-Al组,1/10 IPV-Al组以及IPV组,接种在第6、10、14周进行。研究的主要终点是脊髓灰质炎病毒1,2, 3血清型抗体滴度接种后超过对照4倍以上,完成3次后超过对照8倍以上。

研究于2015年2月至9月进行,包括820名婴儿,其中1/3 IPV-Al组205人,1/5 IPV-Al组205人,1/10 IPV-Al组204人以及IPV组206人。结果显示2次接种后三组IPV-Al接种组已经以高比例达到了主要终点,3次接种后达标比例为1/3 IPV-Al组 98·5% (n=202, 1型), 97·6% (n=200; 2型), 99·5% (n=204, 3型); 1/5 IPV-Al组: 99·5% (n=204, 1型), 96·1% (n=197, 2型), 98·5% (n=202, 3型); 1/10 IPV-Al组: 98·5% (n=201, 1型), 94·6% (n=193, 2型), 99·5% (n=203, 3型)。三组IPV-Al疫苗与IPV相比非劣,并且无接种相关的严重不良事件。

研究认为,接种1/10剂量的 IPV-Al疫苗2剂或3剂即可达到较好的免疫预防效果,基于此研究结果的III期临床试验即将开展。

原文出处:

Prof Luis Rivera et al. Immunogenicity and safety of three aluminium hydroxide adjuvanted vaccines with reduced doses of inactivated polio vaccine (IPV-Al) compared with standard IPV in young infants in the Dominican Republic: a phase 2, non-inferiority, observer-blinded, randomised, and controlled dose investigation trial. Lancet Infect Dis. April 25 2017

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    2017-06-20 howi
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