COVID-19 vaccine hesitancy and vaccine passports: a cross-sectional conjoint experiment in Japan

Objectives While the development of vaccines against the Novel Coronavirus (COVID-19) brought hope of establishing herd immunity and ending the global pandemic, vaccine hesitancy can hinder the progress towards herd immunity. In this study, by analysing the data collected when citizens undergo publi...

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Main Authors: Shohei Okamoto, Kazuki Kamimura, Kohei Komamura
Format: Article
Language:English
Published: BMJ Publishing Group 2022-06-01
Series:BMJ Open
Online Access:https://bmjopen.bmj.com/content/12/6/e060829.full
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author Shohei Okamoto
Kazuki Kamimura
Kohei Komamura
author_facet Shohei Okamoto
Kazuki Kamimura
Kohei Komamura
author_sort Shohei Okamoto
collection DOAJ
description Objectives While the development of vaccines against the Novel Coronavirus (COVID-19) brought hope of establishing herd immunity and ending the global pandemic, vaccine hesitancy can hinder the progress towards herd immunity. In this study, by analysing the data collected when citizens undergo public health restrictions due to the pandemic, we assess the determinants of vaccine hesitancy, reasons for hesitation and potential effectiveness of vaccine passports used to relax public health restrictions on mitigating vaccine hesitancy.Design Cross-sectional study, longitudinal study and conjoint experimental design.Setting An online survey conducted in Japan in July 2021.Participants A demographically representative sample of 5000 Japanese adults aged 20–74.Primary outcome measures COVID-19 vaccination intentionResults We found that about 30% of respondents did not intend to get vaccinated or had not yet decided, with major reasons for vaccine hesitancy relating to concerns about the safety and side effects of the vaccine. In line with previous findings, younger age, lower socioeconomic status, and psychological and behavioural factors such as weaker COVID-19 fear were associated with vaccine hesitancy. Easing of public health restrictions such as travel, wearing face masks and dining out at night was associated with an increase in vaccine acceptance by 4%–10%. Moreover, we found that more than 90% of respondents who intended to get vaccinated actually received it while smaller proportions among those undecided and unwilling to get vaccinated did so.Conclusion With a major concern about vaccine safety and side effects, interventions to mitigate against these may help to reduce vaccine hesitancy. Moreover, when citizens are imposed with restrictions, vaccine passports that increase their freedom may be helpful to increase vaccination rates.
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spelling doaj-art-19abcb39e4e246bd9bffa03db729901a2025-01-24T13:50:09ZengBMJ Publishing GroupBMJ Open2044-60552022-06-0112610.1136/bmjopen-2022-060829COVID-19 vaccine hesitancy and vaccine passports: a cross-sectional conjoint experiment in JapanShohei Okamoto0Kazuki Kamimura1Kohei Komamura2Research Team for Social Participation and Community Health, Tokyo Metropolitan Institute of Gerontology, Itabashi-ku, Tokyo, JapanResearch Center for Financial Gerontology, Keio University, Minato-ku, Tokyo, JapanResearch Center for Financial Gerontology, Keio University, Minato-ku, Tokyo, JapanObjectives While the development of vaccines against the Novel Coronavirus (COVID-19) brought hope of establishing herd immunity and ending the global pandemic, vaccine hesitancy can hinder the progress towards herd immunity. In this study, by analysing the data collected when citizens undergo public health restrictions due to the pandemic, we assess the determinants of vaccine hesitancy, reasons for hesitation and potential effectiveness of vaccine passports used to relax public health restrictions on mitigating vaccine hesitancy.Design Cross-sectional study, longitudinal study and conjoint experimental design.Setting An online survey conducted in Japan in July 2021.Participants A demographically representative sample of 5000 Japanese adults aged 20–74.Primary outcome measures COVID-19 vaccination intentionResults We found that about 30% of respondents did not intend to get vaccinated or had not yet decided, with major reasons for vaccine hesitancy relating to concerns about the safety and side effects of the vaccine. In line with previous findings, younger age, lower socioeconomic status, and psychological and behavioural factors such as weaker COVID-19 fear were associated with vaccine hesitancy. Easing of public health restrictions such as travel, wearing face masks and dining out at night was associated with an increase in vaccine acceptance by 4%–10%. Moreover, we found that more than 90% of respondents who intended to get vaccinated actually received it while smaller proportions among those undecided and unwilling to get vaccinated did so.Conclusion With a major concern about vaccine safety and side effects, interventions to mitigate against these may help to reduce vaccine hesitancy. Moreover, when citizens are imposed with restrictions, vaccine passports that increase their freedom may be helpful to increase vaccination rates.https://bmjopen.bmj.com/content/12/6/e060829.full
spellingShingle Shohei Okamoto
Kazuki Kamimura
Kohei Komamura
COVID-19 vaccine hesitancy and vaccine passports: a cross-sectional conjoint experiment in Japan
BMJ Open
title COVID-19 vaccine hesitancy and vaccine passports: a cross-sectional conjoint experiment in Japan
title_full COVID-19 vaccine hesitancy and vaccine passports: a cross-sectional conjoint experiment in Japan
title_fullStr COVID-19 vaccine hesitancy and vaccine passports: a cross-sectional conjoint experiment in Japan
title_full_unstemmed COVID-19 vaccine hesitancy and vaccine passports: a cross-sectional conjoint experiment in Japan
title_short COVID-19 vaccine hesitancy and vaccine passports: a cross-sectional conjoint experiment in Japan
title_sort covid 19 vaccine hesitancy and vaccine passports a cross sectional conjoint experiment in japan
url https://bmjopen.bmj.com/content/12/6/e060829.full
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AT koheikomamura covid19vaccinehesitancyandvaccinepassportsacrosssectionalconjointexperimentinjapan