在老年人中PPSV23后的长期抗体轨迹:来自4年随访研究的结果
Shanshan Zhou1, Jian Wang1, Min Lv1
1Beijing Center for Disease Prevention and Control, No. 16, Hepingli Middle Street, Dongcheng District, Beijing 100013, China.
Vaccine
|January 24, 2025
概括
在老年人中,肺炎球菌多糖疫苗 (PPSV23) 抗体水平至少在四年内保持升高. 像BMI和性别这样的因素影响抗体持久性,为未来的疫苗接种策略提供信息.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 老年医学 老年医学
背景情况:
- 23性肺炎球菌多糖体疫苗 (PPSV23) 对于预防老年人肺炎球菌疾病至关重要.
- 评估疫苗反应和长期抗体持久性对于优化免疫计划至关重要.
研究的目的:
- 在老年人中对PPSV23免疫接种后的长期抗体水平轨迹的特征.
- 为了确定抗体衰减和持续在四年内持续的模式.
主要方法:
- 一组237名65-70岁的个人接受了一剂PPSV23.
- 血清型特异性IgG抗体被测量在多个时间点,直到接种疫苗后四年.
- 基于组的轨迹建模 (GBTM) 用于分析抗体水平变化.
主要成果:
- 接种疫苗后四年,七种关键血清型的抗体度仍然高于基线水平.
- 较高的基线抗体水平与IgG度在两年内更快速下降相关.
- 女性性别和较高的BMI (≥25) 等因素与一般较高的抗体水平有关.
结论:
- 肺炎球菌IgG抗体水平在PPSV23疫苗接种后至少持续了四年.
- 老年人疫苗接种和再接种策略应考虑个体因素,包括BMI,性别和疫苗接种前的抗体水平.
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