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Review
. 2012 Jan;6(1):52-62.
doi: 10.1111/j.1750-2659.2011.00268.x. Epub 2011 Jun 13.

Quantitative review of antibody response to inactivated seasonal influenza vaccines

Jessica C Seidman  1 , Stephanie A Richard, Cécile Viboud, Mark A Miller
Affiliations
Review

Quantitative review of antibody response to inactivated seasonal influenza vaccines

Jessica C Seidman et al. Influenza Other Respir Viruses. 2012 Jan.

Abstract

Background: Seasonal influenza epidemics are associated with significant morbidity and mortality each year, particularly amongst young children and the elderly. Seasonal influenza vaccines have been available for decades, yet influenza remains a major public health threat in the US, sparking interest in studies evaluating the effectiveness of vaccination.

Objectives: We sought to identify determinants of serological responses to inactivated seasonal influenza vaccines including number of doses, adjuvant, and subject characteristics.

Methods: We reviewed 60 articles published between 1987 and 2006. We used weighted multiple logistic regression and random-effects models to evaluate how seroconversion and seroprotection rates varied with host and vaccine factors.

Results: Both children and seniors tended to have poorer immune responses compared to adults whereas use of adjuvant and a second vaccine dose tended to improve immune response. Pre-vaccination serological status had a large impact on the immune response to vaccination. We found substantial heterogeneity among studies, even with similar population settings and vaccination regimen.

Conclusions: Future studies should stratify their results by pre-vaccination serological status in an effort to produce more precise summary estimates of vaccine response.

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Figures

Figure 1
Figure 1
Meta‐analysis plot of seroprotection rates from single dose, commercially licensed, inactivated vaccine studies in adults (18–59 year). Box sizes are proportional to the number of subjects in each study arm. The summary effect estimates were obtained from the random effects meta‐analysis models. The test for variance heterogeneity was highly significant for all antigens (P < 0.001).
Figure 2
Figure 2
Meta‐analysis plot of seroconversion rates from single dose, commercially licensed, inactivated vaccine studies in adults (18–59 year). Box sizes are proportional to the number of subjects in each study arm. The summary effect estimates were obtained from the random effects meta‐analysis models. The test for variance heterogeneity was highly significant for all antigens (P < 0.001).
See this image and copyright information in PMC

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