Socioeconomic disparities in influenza vaccination uptake: impact of the COVID-19 pandemic in South Korea

Abstract Background This study aimed to investigate the sociodemographic and behavioral factors related to increased influenza vaccination uptake during the COVID-19 pandemic in South Korea, particularly among adults not eligible for free vaccination. Methods Analyzing data from 78,815 participants...

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Main Authors: Muhan Yeo, Jeongmin Seo, Juwon Lim
Format: Article
Language:English
Published: BMC 2025-01-01
Series:BMC Public Health
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Online Access:https://doi.org/10.1186/s12889-024-21254-6
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author Muhan Yeo
Jeongmin Seo
Juwon Lim
author_facet Muhan Yeo
Jeongmin Seo
Juwon Lim
author_sort Muhan Yeo
collection DOAJ
description Abstract Background This study aimed to investigate the sociodemographic and behavioral factors related to increased influenza vaccination uptake during the COVID-19 pandemic in South Korea, particularly among adults not eligible for free vaccination. Methods Analyzing data from 78,815 participants in the Korea National Health and Nutrition Examination Survey (2010–2021), we assessed trends in influenza vaccination coverage. Various sociodemographic factors, behavioral aspects, and psychological stress levels were assessed using multivariable logistic regression to evaluate the difference in vaccination response during pre-/post-COVID-19 periods. Results Lowest income quartile households exhibited decreased influenza vaccination uptake during the pandemic (adjusted odds ratio 0.67, p = 0.011), whereas higher income quartiles exhibited increased uptake. In the lowest income households, unemployed status of household was additionally associated with decreased influenza vaccine uptake (adjusted odds ratio 0.50, p = 0.003). Conclusions This study identified income-based disparities in the responsive increase of influenza vaccination during the COVID-19 pandemic. Lower-income households exhibited a disproportionate reduction in influenza vaccine uptake, emphasizing the need for targeted support systems and expanded free vaccination for prioritized groups to address these disparities.
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spelling doaj-art-30cddfacddd64773a55e50539fe478d72025-01-12T12:43:24ZengBMCBMC Public Health1471-24582025-01-0125111010.1186/s12889-024-21254-6Socioeconomic disparities in influenza vaccination uptake: impact of the COVID-19 pandemic in South KoreaMuhan Yeo0Jeongmin Seo1Juwon Lim2Department of Medicine, Seoul National University College of MedicineDepartment of Medicine, Seoul National University College of MedicineInternational Healthcare Center, Seoul National University HospitalAbstract Background This study aimed to investigate the sociodemographic and behavioral factors related to increased influenza vaccination uptake during the COVID-19 pandemic in South Korea, particularly among adults not eligible for free vaccination. Methods Analyzing data from 78,815 participants in the Korea National Health and Nutrition Examination Survey (2010–2021), we assessed trends in influenza vaccination coverage. Various sociodemographic factors, behavioral aspects, and psychological stress levels were assessed using multivariable logistic regression to evaluate the difference in vaccination response during pre-/post-COVID-19 periods. Results Lowest income quartile households exhibited decreased influenza vaccination uptake during the pandemic (adjusted odds ratio 0.67, p = 0.011), whereas higher income quartiles exhibited increased uptake. In the lowest income households, unemployed status of household was additionally associated with decreased influenza vaccine uptake (adjusted odds ratio 0.50, p = 0.003). Conclusions This study identified income-based disparities in the responsive increase of influenza vaccination during the COVID-19 pandemic. Lower-income households exhibited a disproportionate reduction in influenza vaccine uptake, emphasizing the need for targeted support systems and expanded free vaccination for prioritized groups to address these disparities.https://doi.org/10.1186/s12889-024-21254-6Influenza vaccinesCOVID-19Vaccination hesitancySocioeconomic disparities in HealthHealth Policy
spellingShingle Muhan Yeo
Jeongmin Seo
Juwon Lim
Socioeconomic disparities in influenza vaccination uptake: impact of the COVID-19 pandemic in South Korea
BMC Public Health
Influenza vaccines
COVID-19
Vaccination hesitancy
Socioeconomic disparities in Health
Health Policy
title Socioeconomic disparities in influenza vaccination uptake: impact of the COVID-19 pandemic in South Korea
title_full Socioeconomic disparities in influenza vaccination uptake: impact of the COVID-19 pandemic in South Korea
title_fullStr Socioeconomic disparities in influenza vaccination uptake: impact of the COVID-19 pandemic in South Korea
title_full_unstemmed Socioeconomic disparities in influenza vaccination uptake: impact of the COVID-19 pandemic in South Korea
title_short Socioeconomic disparities in influenza vaccination uptake: impact of the COVID-19 pandemic in South Korea
title_sort socioeconomic disparities in influenza vaccination uptake impact of the covid 19 pandemic in south korea
topic Influenza vaccines
COVID-19
Vaccination hesitancy
Socioeconomic disparities in Health
Health Policy
url https://doi.org/10.1186/s12889-024-21254-6
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AT jeongminseo socioeconomicdisparitiesininfluenzavaccinationuptakeimpactofthecovid19pandemicinsouthkorea
AT juwonlim socioeconomicdisparitiesininfluenzavaccinationuptakeimpactofthecovid19pandemicinsouthkorea