NEJM:青少年接种SARS-CoV-2 mRNA-1273疫苗的效果

2021-12-09 MedSci原创 MedSci原创

青少年接种mRNA-1273疫苗具有可接受的安全性。免疫反应与年轻人相似,mRNA-1273疫苗可有效预防Covid-19。

从2021年4月1日到6月11日,12至17岁青少年2019冠状病毒病(Covid-19)的发病率约为每100000人900例。mRNA-1273疫苗在青少年中的安全性、免疫原性和效果尚未明确。

近日,顶级医学期刊NEJM上发表了一篇研究文章,在这项正在进行的2-3期安慰剂对照试验中,研究人员以2:1的比例随机分配健康青少年(12至17岁)接受两次mRNA-1273疫苗(每次100μg)或安慰剂接种,相隔28天。

该研究的主要目标是在3期试验中评估mRNA-1273在青少年中的安全性以及青少年免疫反应与年轻成人(18至25岁)相比的非劣效性。次要目标包括mRNA-1273在预防Covid-19或无症状严重急性呼吸系统综合症冠状病毒2感染方面的效果。

该研究共有3732名参与者被随机分配接种mRNA-1273(2489名参与者)或安慰剂(1243名参与者)。在mRNA-1273组中,第一次或第二次接种后最常见的不良反应是注射部位疼痛(分别为93.1%和92.4%)、头痛(分别为44.6%和70.2%)和疲劳(分别为47.9%和67.8%);在安慰剂组中,第一次或第二次接种后最常见的不良反应是注射部位疼痛(分别为34.8%或30.3%)、头痛(分别为38.5%和30.2%)和疲劳(分别为36.6%和28.9%)。未发现与mRNA-1273或安慰剂相关的严重不良事件。青少年假病毒中和抗体滴度相对于青年人的几何平均滴度比为1.08(95%置信区间[CI]为0.94至1.24),血清学反应的绝对差异为0.2个百分点(95%CI为-1.8到2.4),满足非劣效性标准。mRNA-1273组在第二次接种后14天没有报告Covid-19病例,安慰剂组发生了4例。

由此可见,青少年接种mRNA-1273疫苗具有可接受的安全性。免疫反应与年轻人相似,mRNA-1273疫苗可有效预防Covid-19。

原始出处:
 
Kashif Ali,et al.Evaluation of mRNA-1273 SARS-CoV-2 Vaccine in Adolescents.NEJM.2021.https://www.nejm.org/doi/full/10.1056/NEJMoa2109522

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    2022-02-14 hukaixun
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    2021-12-11 小刀医生
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    2021-12-09 医鸣惊人

    认真学习了。

    0

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    2021-12-09 1244c0ebm28暂无昵称

    学习学习

    0

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