在患有主要抗体缺乏症的儿科患者中对SARS-CoV-2初始系列和额外剂量疫苗的反应
Megha Tandon1, Daniel V DiGiacomo1,2, Baijun Zhou1
1Division of Rheumatology, Allergy and Immunology, Department of Medicine, Massachusetts General Hospital, Boston, MA, United States.
Frontiers in immunology
|August 14, 2023
概括
主要抗体缺乏症 (PAD) 的儿科患者表现出强烈的SARS-CoV-2疫苗反应,特别是在三剂量系列后. 这一发现支持目前针对这个脆弱群体的疫苗接种指南.
科学领域:
- 免疫学 免疫学 免疫学
- 儿科医学 儿科医学
- 疫苗学 疫苗学 疫苗学
背景情况:
- 有限的数据存在SARS-CoV-2 (严重急性呼吸系统综合征冠状病毒2) 疫苗响应在患有主要抗体缺乏症 (PAD) 的儿科患者.
- 了解免疫疗效对于保护免疫受损儿童至关重要.
研究的目的:
- 评估患有PAD的儿科患者的SARS-CoV-2免疫反应.
- 为了比较儿科PAD患者对成人PAD患者的反应.
- 评估第三剂疫苗对抗体水平的影响.
主要方法:
- 15名儿科PAD患者的回顾性图表审查.
- 在接种疫苗后测量抗SARS-CoV-2-spike抗体水平.
- 与已发表的62名成人PAD患者队列的比较.
- 对人口统计,临床特征和B细胞子集的分析.
主要成果:
- 儿童PAD患者在两剂量系列 (2,890.7对140.1U/mL;p<0.0001) 后显示出比成人PAD患者显著更高的抗SARS-CoV-2-spike抗体水平.
- 较低的类切换记忆B细胞 (<2%的CD19+B细胞) 与儿科患者较低的抗体水平相关 (p=0.02).
- 第三次接种疫苗剂量显著增加了儿科PAD患者的抗体水平 (2,890.7至18,267.2U/mL;p<0.0001).
结论:
- 患有PAD的儿科患者对SARS-CoV-2免疫接种产生强烈的抗体反应.
- 建议小儿PAD患者接种三剂疫苗系列,以优化保护.
- 这些发现支持目前的CDC指导方针,即在这个人群中进行三部分疫苗接种系列.
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