中国五个省份百日咳免疫力的血清流行病学:基于人口的横截面研究
Zhujiazi Zhang1, Qing Wang2, Qi Zhu3
1Department of Immunization and Prevention, Beijing Center for Disease Prevention and Control, Beijing, China.
Human vaccines & immunotherapeutics
|November 15, 2024
概括
童年后,百日咳疫苗接种的抗体水平会下降,这会增加老年儿童和成人感染的风险. 推给这些年龄组使用增强剂,以维持对 pertussis 的免疫力.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 流行病学 流行病学
背景情况:
- 百日咳 (百日咳) 在全球范围内仍然是一个公共卫生问题.
- 了解疫苗接种后抗体持久性对于有效的控制策略至关重要.
研究的目的:
- 评估 Bordetella pertussis 的血清流行率和在中国接种疫苗后的抗体持久性.
- 为了确定最近感染率上升的年龄组.
主要方法:
- 一项涉及来自中国五个省份 (2017-2018) 的6060名健康受试者的横截面研究.
- 测量血清IgG和IgA抗体对百日咳毒素 (anti-PT) 和丝状血凝素 (anti-FHA) 的ELISA测量.
- 计算几何平均度 (GMC),血清阳性和最近的感染率.
主要成果:
- 抗体水平 (抗PT IgG,抗PT IgA,抗FHA IgG) 在0-6岁儿童中最高,但在5岁时下降.
- 在6岁以上的个体中,百日咳的血清阳性为9.0%,最近感染率为3.3%.
- 最近的感染率从6岁开始增加,在9,20,40岁和≥60岁达到顶峰.
结论:
- 百日咳疫苗接种可以提高抗PTIgG水平,但这些水平相对迅速下降.
- 血清估计的最近感染率在学龄儿童,青少年和成年人中上升.
- 在老年人群中,有必要考虑使用百日咳疫苗增剂.
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