PDF(Pubmed)
Abstract：
Elderly individuals face a high risk of hospitalization and death related to influenza, thus prioritizing them for influenza vaccination. Due to variations in the influenza virus and waning protective antibodies, annual influenza vaccination is recommended. However, research on repeated influenza vaccination among elderly individuals in China is limited. From 2020 to 2022, the average influenza vaccination coverage among registered elderly individuals in Shanghai was 4.1%, showing a declining trend over time. In 2020, the rate of repeated influenza vaccination among elderly individuals was 28.35%, which rose to almost two-thirds both in 2021 and 2022. No increased risk of adverse events following immunization was observed after repeated influenza vaccination during this period. Our study also found that elderly individuals with Shanghai household registration, managed by community clinics, and older age tended to receive more doses of repeated influenza vaccination throughout the period from 2020 to 2022. Increasing influenza vaccine coverage among elderly individuals in Shanghai is both urgent and challenging. Health authorities should intensify educational and promotional campaigns to encourage uptake of annual repeated influenza vaccination among elderly individuals.
摘要：
老年人面临因流感而住院和死亡的高风险,因此，他们优先接种流感疫苗。由于流感病毒的变异和保护性抗体的减弱，建议每年接种流感疫苗。然而,中国老年人反复接种流感疫苗的研究有限。从2020年到2022年，上海注册老年人的平均流感疫苗接种覆盖率为4.1%，随着时间的推移呈现下降趋势。2020年，老年人群重复流感疫苗接种率为28.35%，这一数字在2021年和2022年都上升到了近三分之二。在此期间重复接种流感疫苗后，未观察到免疫接种后不良事件的风险增加。我们的研究还发现，具有上海户籍的老年人，由社区诊所管理，从2020年到2022年，年龄较大的人倾向于接受更多剂量的反复流感疫苗接种。提高上海老年人群的流感疫苗覆盖率既紧迫又具有挑战性。卫生当局应加强教育和宣传活动，以鼓励老年人每年反复接种流感疫苗。
