title: Trends in influenza vaccine coverage in pregnant women, 2008 to 2012.
abstract: BACKGROUND
  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.
  
  
  METHODS
  Retrospective cohort study of 10,145 pregnant women.
  
  
  METHODS
  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.
authors.affiliation: Senior Research Associate at The Center for Health Research in Portland, OR, USA. michelle.l.henninger@kpchr.org
authors.forename: Michelle
authors.initials: M
authors.lastname: Henninger
authors.forename: Bradley
authors.initials: B
authors.lastname: Crane
authors.forename: Allison
authors.initials: A
authors.lastname: Naleway
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007252:Influenza Vaccines / Q000008:administration & dosage*; D007251:Influenza, Human / Q000517:prevention & control*; D009922:Oregon; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000517:prevention & control*; D011295:Prenatal Care; D012189:Retrospective Studies; D014611:Vaccination / Q000639:trends*; D014861:Washington
chemical_list: D007252:Influenza Vaccines