| Literature DB >> 19368783 |
Janet E McElhaney1, Catherine Ewen, Xin Zhou, Kevin P Kane, Dongxu Xie, W David Hager, Mary Beth Barry, Alison Kleppinger, Yazhen Wang, R Chris Bleackley.
Abstract
This study compared serum antibody titers and granzyme B (GrzB) levels in virus-stimulated peripheral blood mononuclear cells following influenza vaccination. Twelve of 239 older adults who subsequently developed laboratory-diagnosed influenza illness (LDI) had significantly lower GrzB levels compared to subjects without LDI (p=0.004). Eight subjects with LDI in the previous year showed an enhanced GrzB response to vaccination (p=0.02). Serum antibody titers following vaccination did not distinguish those older adults who developed LDI from those who did not. These results suggest that GrzB levels could be combined with antibody titers to more effectively predict vaccine efficacy in older adults.Entities:
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Year: 2009 PMID: 19368783 PMCID: PMC2800816 DOI: 10.1016/j.vaccine.2009.01.136
Source DB: PubMed Journal: Vaccine ISSN: 0264-410X Impact factor: 3.641