International Institute for Zoonosis Control, Hokkaido University, Kita-20 Nishi-10, Kita-ku, Sapporo 001-0020, Japan.
International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo 001-0020, Japan.
Viruses. 2021 May 24;13(6):971. doi: 10.3390/v13060971.
Despite seasonal influenza vaccines having been routinely used for many decades, influenza A virus continues to pose a global threat to humans, causing high morbidity and mortality each year. The effectiveness of the vaccine is largely dependent on how well matched the vaccine strains are with the circulating influenza virus strains. Furthermore, low vaccine efficacy in naïve populations such as young children, or in the elderly, who possess weakened immune systems, indicates that influenza vaccines need to be more personalized to provide broader community protection. Advances in both vaccine technologies and our understanding of influenza virus infection and immunity have led to the design of a variety of alternate vaccine strategies to extend population protection against influenza, some of which are now in use. In this review, we summarize the progress in the field of influenza vaccines, including the advantages and disadvantages of different strategies, and discuss future prospects. We also highlight some of the challenges to be faced in the ongoing effort to control influenza through vaccination.
尽管季节性流感疫苗已被常规使用了几十年,但甲型流感病毒仍持续对人类构成全球性威胁,每年导致大量发病和死亡。疫苗的有效性在很大程度上取决于疫苗株与流行的流感病毒株的匹配程度。此外,在儿童等初免人群或免疫系统较弱的老年人等人群中,疫苗效力较低,表明流感疫苗需要更加个性化,以提供更广泛的社区保护。疫苗技术的进步以及我们对流感病毒感染和免疫的理解,促使设计了各种替代疫苗策略,以扩大人群对流感的保护,其中一些策略现已投入使用。在这篇综述中,我们总结了流感疫苗领域的进展,包括不同策略的优缺点,并讨论了未来的前景。我们还强调了在通过疫苗接种控制流感的持续努力中将要面临的一些挑战。
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