BMJ:人乳头瘤病毒(HPV)二价疫苗对流产的影响

2015-09-08 MedSci MedSci原创

为了调查二价人乳头瘤病毒(HPV)疫苗对流产的影响,研究人员进行了一项随机,双盲长期观察随访的试验,并结合了一项独立的未接种疫苗的人群为基础的研究队列。该单中心研究在哥斯达黎加进行。该试验包括7466名女性,未接种疫苗的人群包括2836名女性,随机试验的结束时停止招募,并与观测试验组件平行进行。在试验中的女性被分配接受三种剂量的二价HPV疫苗(n=3727)或对照的甲肝疫苗(n=3739)。在试验

目标:为了调查人乳头瘤病毒(HPV)二价疫苗对流产的影响。


设计:结合独立的未接种疫苗的人群为基础的单中心,随机,双盲队列研究。并进行了长期随访观察。该试验在哥斯达黎加进行。

参与者:该试验包括7466名女性,未接种疫苗者2836名,随机试验结束时停止招募,并与观测试验组件平行进行。

干预:试验参与者被分配接受三种剂量的二价HPV疫苗(n=3727)或对照的甲肝疫苗(n=3739)。在试验结束时将交叉二价HPV疫苗接种在甲肝疫苗的手臂上。在未接种疫苗队列中的女性不接受(n=2836)任何疫苗。

主要评价方法:即流产的风险。由美国疾病控制和预防中心定义为妊娠20周以内流产,孕妇暴露于二价HPV疫苗在不到90天的时间内或来自于任何疫苗任何时间的流产。并与妊娠期间暴露于甲肝疫苗和未接种疫苗人群进行了比较。

结果:在接种二价HPV疫苗后的任何时间怀孕的3394名女性中,381例妊娠怀孕少于90天接种疫苗。未暴露二价HPV疫苗的女性有2507名在接种甲肝疫苗后怀孕,在未接种疫苗的人群有720名女性怀孕。所有暴露的孕妇发生流产451例(13.3%),接种二价HPV疫苗不到90天的孕妇发生流产50例(13.1%),未暴露的孕妇发生流产414例(12.8%),其中316例(12.6% )发生在甲肝疫苗接种组,98例(13.6%)发生在未接种疫苗的队列中。在未经调整的分析中,接种疫苗不到90天怀孕与所有未暴露的怀孕的流产相对风险是1.02(95%可信区间为0.78〜1.34,单方面P=0.436)。在分层分析中,当调整了接种疫苗年龄(相对风险 1.15,单方面P=0.17),受孕年龄(1.03,p=0.422),和日历年(1.06,p=0.358)后结果是相似的。在接种二价HPV疫苗的任何时间怀孕的孕妇中,暴露疫苗没有增加整体或亚组中的风险,在妊娠13-20周的流产除外(相对风险1.35,95%置信区间1.02〜1.77,单方面P=0.017)。

结论:目前没有任何证据表明,二价HPV疫苗会增加接种不到90天怀孕的妇女发生流产的风险。在接种疫苗后任何时间怀孕的亚组中,评估的流产风险增加可能成为一个彻底的敏感性指标,但由于真正的关联不能完全排除,还需要在现有和未来的研究中继续进行探索。

原始出处:

Orestis A Panagiotou,Brian L Befano, Paula Gonzalez,et al.Effect of bivalent human papillomavirus vaccination on pregnancy outcomes,BMJ,2015.9.7

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    2016-07-12 gaoxiaoe
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    2015-10-19 zhouxue1990

    文章未能得出明确结论

    0

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    2015-09-09 Dr.LV

    学习啦

    0