期刊
MICROBES AND INFECTION
卷 10, 期 9, 页码 1024-1029出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micinf.2008.07.002
关键词
Influenza A virus; Heterosubtypic immunity; Antibodies; T cells
资金
- NIAID
- Division of Intramural Research
- NTH
- DHHS
Influenza A virus (IAV) strains are denoted by the subtype of their hemagglutinin (HA) and neuraminidase (NA) virion surface proteins. Major changes in HA subtype among strains circulating in humans are reffered to as antigenic shift. Antigenic shift can occur by two means: direct transmission of a zoonotic strain to humans or through reshuffling of the segmented genome in cells co-infected with animal and human strains. The lack of circulating anti-HA antibodies in human populations to a novel IAV results in extremely high frequency of illness and the potential for severe morbidity and mortality on a world-wide basis: the dreaded pandemic. Such pandemics could be partially controlled by developing a vaccine that generated effective heterosubtypic immunity (HSI) based on immune recognition of IAV antigens conserved across all viral strains. While it has long been known that T cells exhibit such broad cross-reactive specificity that could provide effective HSI, recent influenza and speculate aon the potential for this approach to contribute to public health. Published by Elsevier Masson SAS.
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