预防流感的疫苗接种策略。
Vaccination strategies against influenza.
作者信息
Hanon E
机构信息
GlaxoSmithKline, Belgique.
出版信息
Bull Mem Acad R Med Belg. 2009;164(10):283-7.
Every year, Influenza virus infection is at the origin of substantial excess in morbidity and mortality in developed as well as developing countries. Influenza viruses undergo antigenic drift which cause annual replacement of strain included in classical trivalent vaccines. Less frequently, this virus can also undergo antigenic shift, which corresponds to a major antigenic change and can lead to an extra medical burden. Several vaccines have been made available to immunize individuals against seasonal as well as pandemic influenza viruses. For seasonal Influenza vaccines, live attenuated and classical inactivated trivalent vaccines have been licensed and are widely used. Additionally, several strategies are under investigations to improve further the efficacy of existing seasonal vaccines in children and elderly. These include the use of adjuvant, increase in antigen content, or alternative route of delivery. Similarly, several approaches have been licensed to address additional challenge posed by pandemic viruses. The different vaccination strategies used to maximise protection against seasonal as well as pandemic influenza will be reviewed and discussed in the perspective the current threat posed by the H1N1v pandemic Influenza.
每年,在发达国家和发展中国家,流感病毒感染都是导致发病率和死亡率大幅上升的根源。流感病毒会发生抗原漂移,这使得传统三价疫苗所包含的毒株每年都有所更替。这种病毒还会较少发生抗原转变,这相当于一次重大的抗原变化,可能会导致额外的医疗负担。目前已有多种疫苗可用于使个体对季节性流感病毒和大流行性流感病毒产生免疫。对于季节性流感疫苗,减毒活疫苗和传统灭活三价疫苗已获许可并被广泛使用。此外,还有几种策略正在研究中,以进一步提高现有季节性疫苗在儿童和老年人中的效力。这些策略包括使用佐剂、增加抗原含量或采用替代给药途径。同样,已有几种方法获得许可,以应对大流行性病毒带来的其他挑战。本文将从甲型H1N1流感大流行当前构成的威胁这一角度,对为最大限度预防季节性流感和大流行性流感而采用的不同疫苗接种策略进行综述和讨论。