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Emerg Infect Dis. 2006 Jan;12(1):48-54.

Cell-mediated protection in influenza infection.

Author information

1
St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA.

Abstract

Current vaccine strategies against influenza focus on generating robust antibody responses. Because of the high degree of antigenic drift among circulating influenza strains over the course of a year, vaccine strains must be reformulated specifically for each influenza season. The time delay from isolating the pandemic strain to large-scale vaccine production would be detrimental in a pandemic situation. A vaccine approach based on cell-mediated immunity that avoids some of these drawbacks is discussed here. Specifically, cell-mediated responses typically focus on peptides from internal influenza proteins, which are far less susceptible to antigenic variation. We review the literature on the role of CD4+ and CD8+ T cell-mediated immunity in influenza infection and the available data on the role of these responses in protection from highly pathogenic influenza infection. We discuss the advantages of developing a vaccine based on cell-mediated immune responses toward highly pathogenic influenza virus and potential problems arising from immune pressure.

PMID:
16494717
PMCID:
PMC3291410
DOI:
10.3201/eid1201.051237
[Indexed for MEDLINE]
Free PMC Article
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