Cited by 258Influenza Virus Research StudiesRespiratory viral infections researchVaccine Coverage and Hesitancy

Effectiveness of Seasonal Influenza Vaccines in the United States During a Season With Circulation of All Three Vaccine Strains

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Treanor, J. J., Talbot, H. K., Ohmit, S. E., Coleman, L. A., Thompson, M. G., Cheng, P.-Y., Petrie, J. G., Lofthus, G. +9 more·2012·Clinical Infectious Diseases

Abstract

BACKGROUND: Influenza vaccines may be reformulated annually because of antigenic drift in influenza viruses. However, the relationship between antigenic characteristics of circulating viruses and vaccine effectiveness (VE) is not well understood. We conducted an assessment of the effectiveness of US influenza vaccines during the 2010-2011 season. METHODS: We performed a case-control study comparing vaccination histories between subjects with acute respiratory illness with positive real-time reverse transcription polymerase chain reaction for influenza and influenza test-negative controls. Subjects with acute respiratory illness of ≤7 days duration were enrolled in hospitals, emergency departments, or outpatient clinics in communities in 4 states. History of immunization with the 2010-2011 vaccine was ascertained from vaccine registries or medical records. Vaccine effectiveness was estimated in logistic regression models adjusted for study community, age, race, insurance status, enrollment site, and presence of a high-risk medical condition. RESULTS: A total of 1040 influenza-positive cases and 3717 influenza-negative controls were included from the influenza season, including 373 cases of influenza A(H1N1), 334 cases of influenza A(H3N2), and 333 cases of influenza B. Overall adjusted VE was 60% (95% confidence interval [CI], 53%-66%). Age-specific VE estimates ranged from 69% (95% CI, 56%-77%) in children aged 6 months-8 years to 38% (95% CI, -16% to 67%) in adults aged ≥65 years. CONCLUSIONS: The US 2010-2011 influenza vaccines were moderately effective in preventing medically attended influenza during a season when all 3 vaccine strains were antigenically similar to circulating viruses. Continued monitoring of influenza vaccines in all age groups is important, particularly as new vaccines are introduced.

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  1. Osterholm MT, Kelley NS, Sommer A, Belongia E. Influenza vaccine efficacy and effectiveness: a new look at the evidence. Lancet Infect Dis 2012; 12:36-44.
  2. Falsey AR, Treanor JJ, Tornieporth N, Capellan J, Gorse GJ. Superior immunogenicity of high dose influenza vaccine compared with standard influenza vaccine in adults >65 years of age: a random- ized double-blinded controlled phase 3 trial. J Infect Dis 2008; 200: 172-80.

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Authors
Treanor, J. J., Talbot, H. K., Ohmit, S. E., Coleman, L. A., Thompson, M. G., Cheng, P.-Y., Petrie, J. G., Lofthus, G., Meece, J. K., Williams, J. V., Berman, L., Breese Hall, C., Monto, A. S., Griffin, M. R., Belongia, E., Shay, D. K., & for the US Flu-VE Network
Affiliations
  • University of Rochester Medicine (US)
  • University of Michigan (US)
  • Marshfield Clinic Research Foundation (US)
  • Centers for Disease Control and Prevention (US)
  • Vanderbilt University (US)
  • VA Tennessee Valley Healthcare System (US)
Corresponding author
Treanor, J. J.
Venue
Clinical Infectious Diseases
Published
2012-07-25
Volume
55
Issue
7
Pages
951-959
ISSN
  • 1058-4838 (ISSN-L)
  • 1537-6591
OpenAlex
W2153244724
Cited by
258
References
22
Citations by year
2026: 4 · 2025: 6 · 2024: 13 · 2023: 12 · 2022: 10 · 2021: 8 · 2020: 17 · 2019: 15 · 2018: 15 · 2017: 20 · 2016: 26 · 2015: 33 · 2014: 38 · 2013: 36 · 2012: 4
FWCI
26.58
Type
journal article
Language
en
Open access
Locations
  • Clinical Infectious Diseases (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • GlaxoSmithKline
  • Sanofi
  • Vanderbilt University
  • University of Michigan
  • Henry Ford Health System
  • University of Rochester (U01 IP000183)
  • Centers for Disease Control and Prevention (U18IP000170, U01 IP000183, U18IP000183, U01 IP000172, U18IP000172, U18IP000184, U01‐IP000170)
  • Sanofi Pasteur
  • National Institute of Allergy and Infectious Diseases (K23AI074863)
  • National Center for Immunization and Respiratory Diseases
Topics
  • Health Sciences › Medicine › Epidemiology › Influenza Virus Research Studies
  • Health Sciences › Medicine › Epidemiology › Respiratory viral infections research
  • Social Sciences › Health › Vaccine Coverage and Hesitancy
Keywords
seasonal influenza vaccine, vaccine effectiveness, 2010-2011 influenza season, antigenic drift, H1N1 influenza, H3N2, influenza B, age-specific vaccine effectiveness, acute respiratory illness, vaccine strain matching
MeSH terms
Adolescent, Adult, Aged, Aged, 80 and over, Child, Child, Preschool, Female, Humans, Infant, Influenza, Human, Influenza Vaccines, Male, Middle Aged, United States, Case-Control Studies, Treatment Outcome, Young Adult

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