Challenges in estimating influenza vaccine effectiveness

Introduction: Influenza vaccination is regarded as the most effective way to prevent influenza infection. Due to the rapid genetic changes that influenza viruses undergo, seasonal influenza vaccines must be reformulated and re-administered annually necessitating the evaluation of influenza vaccine e...

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Main Authors: Kylie E. C. Ainslie, Michael Haber, Walt A. Orenstein
Format: Article
Language:English
Published: Taylor & Francis Group 2019-06-01
Series:Expert Review of Vaccines
Subjects:
Online Access:http://dx.doi.org/10.1080/14760584.2019.1622419
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author Kylie E. C. Ainslie
Michael Haber
Walt A. Orenstein
author_facet Kylie E. C. Ainslie
Michael Haber
Walt A. Orenstein
author_sort Kylie E. C. Ainslie
collection DOAJ
description Introduction: Influenza vaccination is regarded as the most effective way to prevent influenza infection. Due to the rapid genetic changes that influenza viruses undergo, seasonal influenza vaccines must be reformulated and re-administered annually necessitating the evaluation of influenza vaccine effectiveness (VE) each year. The estimation of influenza VE presents numerous challenges. Areas Covered: This review aims to identify, discuss, and, where possible, offer suggestions for dealing with the following challenges in estimating influenza VE: different outcomes of interest against which VE is estimated, study designs used to assess VE, sources of bias and confounding, repeat vaccination, waning immunity, population level effects of vaccination, and VE in at-risk populations. Expert Opinion: The estimation of influenza VE has improved with surveillance networks, better understanding of sources of bias and confounding, and the implementation of advanced statistical methods. Future research should focus on better estimates of the indirect effects of vaccination, the biological effects of vaccination, and how vaccines interact with the immune system. Specifically, little is known about how influenza vaccination impacts an individual’s infectiousness, how vaccines wane over time, and the impact of repeated vaccination.
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spelling doaj.art-538c3071cf95497baa138c9fcda3d7a82023-09-20T10:18:04ZengTaylor & Francis GroupExpert Review of Vaccines1476-05841744-83952019-06-0118661562810.1080/14760584.2019.16224191622419Challenges in estimating influenza vaccine effectivenessKylie E. C. Ainslie0Michael Haber1Walt A. Orenstein2School of Public Health, Imperial College LondonRollins School of Public Health, Emory UniversitySchool of Medicine, Emory UniversityIntroduction: Influenza vaccination is regarded as the most effective way to prevent influenza infection. Due to the rapid genetic changes that influenza viruses undergo, seasonal influenza vaccines must be reformulated and re-administered annually necessitating the evaluation of influenza vaccine effectiveness (VE) each year. The estimation of influenza VE presents numerous challenges. Areas Covered: This review aims to identify, discuss, and, where possible, offer suggestions for dealing with the following challenges in estimating influenza VE: different outcomes of interest against which VE is estimated, study designs used to assess VE, sources of bias and confounding, repeat vaccination, waning immunity, population level effects of vaccination, and VE in at-risk populations. Expert Opinion: The estimation of influenza VE has improved with surveillance networks, better understanding of sources of bias and confounding, and the implementation of advanced statistical methods. Future research should focus on better estimates of the indirect effects of vaccination, the biological effects of vaccination, and how vaccines interact with the immune system. Specifically, little is known about how influenza vaccination impacts an individual’s infectiousness, how vaccines wane over time, and the impact of repeated vaccination.http://dx.doi.org/10.1080/14760584.2019.1622419influenzavaccinationeffectivenesschallengestest-negativecase-controlcohortbiaswaningconfounding
spellingShingle Kylie E. C. Ainslie
Michael Haber
Walt A. Orenstein
Challenges in estimating influenza vaccine effectiveness
Expert Review of Vaccines
influenza
vaccination
effectiveness
challenges
test-negative
case-control
cohort
bias
waning
confounding
title Challenges in estimating influenza vaccine effectiveness
title_full Challenges in estimating influenza vaccine effectiveness
title_fullStr Challenges in estimating influenza vaccine effectiveness
title_full_unstemmed Challenges in estimating influenza vaccine effectiveness
title_short Challenges in estimating influenza vaccine effectiveness
title_sort challenges in estimating influenza vaccine effectiveness
topic influenza
vaccination
effectiveness
challenges
test-negative
case-control
cohort
bias
waning
confounding
url http://dx.doi.org/10.1080/14760584.2019.1622419
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AT michaelhaber challengesinestimatinginfluenzavaccineeffectiveness
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