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Volume 10
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Article

Acceptance of Booster COVID-19 Vaccine and Its Association with Components of Vaccination Readiness in the General Population: A Cross-Sectional Survey for Starting Booster Dose in Japan

by
Mikiko Tokiya
1,*,†,
Megumi Hara
2,†,
Akiko Matsumoto
1,
Mohammad Said Ashenagar
1,
Takashi Nakano
3 and
Yoshio Hirota
4
1
Department of Social and Environmental Medicine, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan
2
Department of Preventive Medicine, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan
3
Department of Pediatrics, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192, Japan
4
Clinical Epidemiology Research Center, SOUSEIKAI Medical Group (Medical Co. LTA), 3-5-1 Kashiiteriha, Higashi-ku, Fukuoka 813-0017, Japan
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Vaccines 2022, 10(7), 1102; https://doi.org/10.3390/vaccines10071102
Submission received: 31 May 2022 / Revised: 6 July 2022 / Accepted: 6 July 2022 / Published: 8 July 2022
(This article belongs to the Special Issue The COVID Vaccine)
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Abstract

The Japanese government approved COVID-19 vaccine booster doses in November 2021. However, intentions and readiness for booster vaccines among the general population were unknown. This survey measured the intentions for COVID-19 booster vaccination. Among 6172 participants (53.2% female), 4832 (78.3%) accepted booster doses; 415 (6.7%) hesitated. Vaccination intention was associated with higher age, marital status, having children, underlying diseases, and social norms. To evaluate the readiness for vaccination, the seven component (7C) vaccination readiness scale was employed, comprising “Confidence”, “Complacency”, “Constraints”, “Calculation”, “Collective responsibility”, “Compliance”, and “Conspiracy”. Participants with acceptance showed significantly higher 7C scores (p < 0.001) than those who hesitated or were unsure. Multivariable logistic regression analysis revealed that the “social norms” predictor was the strongest predictor of acceptance (adjusted odds ratio (AOR) 4.02, 95% confidence interval (CI): 3.64–4.45). “Constraints” (AOR: 2.27, 95% CI: 2.11–2.45) and “complacency” (AOR: 2.18, 95% CI: 2.03–2.34) were also strongly associated with acceptance, but “compliance” (AOR: 1.24, 95% CI: 1.18–1.31) and “conspiracy” (AOR: 1.42, 95% CI: 1.33–1.52) were weakly associated. The “7C vaccination readiness scale” is useful for measuring vaccine acceptance in the Japanese population. However, “social norms” might be more suitable than “compliance” and “conspiracy” for measuring vaccine acceptance in Japan.
Keywords: vaccine; readiness; scale; intention; 7C; social norms; survey; epidemiology vaccine; readiness; scale; intention; 7C; social norms; survey; epidemiology

Share and Cite

MDPI and ACS Style

Tokiya, M.; Hara, M.; Matsumoto, A.; Ashenagar, M.S.; Nakano, T.; Hirota, Y. Acceptance of Booster COVID-19 Vaccine and Its Association with Components of Vaccination Readiness in the General Population: A Cross-Sectional Survey for Starting Booster Dose in Japan. Vaccines 2022, 10, 1102. https://doi.org/10.3390/vaccines10071102

AMA Style

Tokiya M, Hara M, Matsumoto A, Ashenagar MS, Nakano T, Hirota Y. Acceptance of Booster COVID-19 Vaccine and Its Association with Components of Vaccination Readiness in the General Population: A Cross-Sectional Survey for Starting Booster Dose in Japan. Vaccines. 2022; 10(7):1102. https://doi.org/10.3390/vaccines10071102

Chicago/Turabian Style

Tokiya, Mikiko, Megumi Hara, Akiko Matsumoto, Mohammad Said Ashenagar, Takashi Nakano, and Yoshio Hirota. 2022. "Acceptance of Booster COVID-19 Vaccine and Its Association with Components of Vaccination Readiness in the General Population: A Cross-Sectional Survey for Starting Booster Dose in Japan" Vaccines 10, no. 7: 1102. https://doi.org/10.3390/vaccines10071102

APA Style

Tokiya, M., Hara, M., Matsumoto, A., Ashenagar, M. S., Nakano, T., & Hirota, Y. (2022). Acceptance of Booster COVID-19 Vaccine and Its Association with Components of Vaccination Readiness in the General Population: A Cross-Sectional Survey for Starting Booster Dose in Japan. Vaccines, 10(7), 1102. https://doi.org/10.3390/vaccines10071102

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