在美国退伍军人中呼吸道同胞细胞病毒疫苗有效性的持久性
Kristina L Bajema1,2, David P Bui1, Lei Yan3,4
1Veterans Affairs Portland Health Care System, Portland, Oregon.
JAMA internal medicine
|November 24, 2025
概括
呼吸道同胞病毒 (RSV) 疫苗保护老年人,但其有效性在两个季节内减弱,特别是在免疫受损的个体中. 需要进一步的研究来确定最佳的再接种策略,以获得持续的保护.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 公共卫生 公共卫生
背景情况:
- 建议老年人和高风险人群接种一次剂量呼吸道同胞性病毒 (RSV) 疫苗.
- 关于RSV疫苗有效性的长期临床数据对于公共卫生建议至关重要.
研究的目的:
- 为了评估RSV疫苗接种在两个呼吸系统疾病季节的有效性.
- 评估RSV疫苗单剂量所提供的保护持续时间.
主要方法:
- 使用退伍军人卫生管理局数据进行的目标试验仿真研究.
- 包括60岁及以上的退伍军人,在2023年9月至2024年3月期间接种疫苗.
- 将接种疫苗的个体与未接种疫苗的对照进行匹配,并随着时间的推移监测RSV相关的结果.
主要成果:
- 疫苗对RSV感染的有效性从1个月后的82.5%下降到18个月后的59.4%.
- 在随访期间,紧急诊所和住院治疗的有效性也大幅下降.
- 免疫功能低下个体的保护明显较低,从75.2%降至39.7%.
结论:
- 接种RSV疫苗在预防RSV疾病和减少医疗保健利用方面表现出有效性.
- 疫苗的保护作用在两个季节内减弱,免疫力低下的人群的下降更为明显.
- 研究结果表明,需要重新评估疫苗接种计划,并考虑为特定风险群体提供额外的剂量.
更多相关视频
相关概念视频
Vaccinations
51.1K
Overview
51.1K
Acute Respiratory Failure-II
974
Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
974
Acute Respiratory Failure-III
714
Hypercapnic respiratory failure, also known as Type 2 or ventilatory respiratory failure, is a severe condition characterized by the body's inability to effectively remove carbon dioxide (CO2) from the bloodstream. It leads to an arterial CO2 pressure (PaCO2) exceeding 45 mmHg and a blood pH above 7.35. This situation indicates that the body's ventilatory demand, or the ventilation needed to maintain normal PaCO2 levels, surpasses its supply or the maximum gas flow achievable without...
714
Acute Respiratory Failure-V
407
The treatment for acute respiratory failure varies based on factors like the underlying cause, overall health, and severity. A collaborative healthcare team is essential for early detection, often through arterial blood gas analysis. Identifying the cause is the primary goal, with treatment strategies adjusted for ventilation/perfusion (V/Q) mismatch, shunting, or diffusion impairment.
Ensure that patients are monitored continuously for their response to therapy, including changes in...
Ensure that patients are monitored continuously for their response to therapy, including changes in...
407
Acute Respiratory Failure-I
779
Acute respiratory failure is a condition characterized by the inability of the lungs to perform their primary function: gas exchange. This failure leads to insufficient oxygen levels (hypoxemia) in the blood, elevated carbon dioxide levels (hypercapnia), or both, causing critical impairment in organ function.
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
779
Immunological Memory
14.9K
Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
14.9K


