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. 2013 Spring;17(2):31-6.
doi: 10.7812/TPP/12-115.

Trends in influenza vaccine coverage in pregnant women, 2008 to 2012

Michelle Henninger  1 , Bradley Crane, Allison Naleway
Affiliations

Trends in influenza vaccine coverage in pregnant women, 2008 to 2012

Michelle Henninger et al. Perm J. 2013 Spring.

Abstract

Context: Pregnant women are at increased risk of severe influenza-related complications and hospitalizations and are a priority group for influenza vaccination.

Objective: To examine coverage of seasonal and pandemic influenza A (H1N1) vaccines in pregnant women in a managed care setting, from 2008 to 2012.

Design: Retrospective cohort study of 10,145 pregnant women.

Main outcome measures: H1N1 and seasonal influenza vaccination rates.

Results: Seasonal influenza vaccine coverage increased from 38% to 63% between the 2008-2009 and 2010-2011 seasons, and then dropped to 61% in 2011-2012. Vaccine coverage was higher in women considered at high risk of influenza complications, increasing from 43% in 2008-2009 to 71% in 2010-2011, before decreasing to 69% in 2011-2012. H1N1 vaccine coverage was greater than seasonal influenza coverage in 2009-2010 in the overall pregnant population (61% vs 53%) and in the high-risk group (64% vs 59%). We observed statistically significant differences in vaccination rates by trimester, gravidity, maternal age, and race/ethnicity.

Conclusions: Vaccination rates increased significantly from 2008 to 2011, then dropped slightly in 2011-2012. Continued efforts are needed to ensure adequate vaccination coverage in this high-risk population.

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Figures

Figure 1
Figure 1
Seasonal and H1N1 influenza vaccination coverage rates, by influenza season. Triangle = H1N1 influenza vaccination (2009–2010 season only); diamonds = seasonal influenza vaccination.
See this image and copyright information in PMC

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