![]() Prioritizing health care workers (HCWs) and people with medical vulnerabilities associated with poorer COVID-19 outcomes, such as older adults or those with chronic diseases, was common practice across countries. At the initial stage of vaccination, due to limitations in supply, logistics, and workforce, it was impossible to provide an equal opportunity for vaccination to all citizens at the same time. In addition to the direct benefits to vaccine recipients, there are indirect benefits to those who are protected from the spread of COVID-19 infection. Being vaccinated contributes not only to preventing infection but also to reducing the severity, hospitalization, and mortality rates of COVID-19. ![]() Vaccines are the most effective way to reduce the risk of COVID-19 infection, to bring herd immunity, and eventually to end the pandemic. To address this global challenge, COVID-19 vaccines were quickly developed, tested, licensed, and delivered worldwide in a relatively short time frame. Since 2020, the wave of COVID-19 infection caused by SARS-COV-2 has affected populations intermittently around the world. ![]() The findings of this study are essential for policy makers in Japan and other countries to develop effective vaccination strategies for future pandemics. There was room for improvement among the nonpriority group. The priority group for vaccination achieved higher vaccination coverage in February 2022. Prior vaccine intention and confidence in vaccines were strong predictors of vaccine uptake.Ĭonclusions: The priority settings at the start of the COVID-19 vaccination program had a significant impact on vaccine coverage after 1 year. Risk ratios for received, reserved, or intended for vaccination in February 2022 were 1.05 (95% CI 1.03-1.07) for the health care worker group, 1.02 (95% CI 1.005-1.03) for the older adult group, and 1.01 (95% CI 0.999-1.03) for the preexisting conditions group compared with the nonpriority group. Protection of themselves and their families from potential infection was the most frequent reason for getting vaccinated, whereas concern about side effects was the most frequent reason for hesitation across the groups. Prior vaccine intention and subsequent vaccine coverage rates were higher in the priority groups. In February 2022, a total of 1570 out of 13,555 (11.6%) respondents completed the third dose and 10,589 (78.1%) respondents completed the second dose. Results: In February 2021, a total of 5182 out of 13,555 (38.23%) respondents expressed their intention to get vaccinated. Modified Poisson regression analysis with a robust error estimated the risk ratio for COVID-19 vaccine uptake after adjusting for socioeconomic background, health-seeking behavior, attitude toward vaccines, and COVID-19 infection history. The remaining patients were treated as nonpriority (n=7017). On the basis of the information obtained in February 2021, we identified 3 types of priority groups: health care workers (n=831), people aged ≥65 years (n=4048), and those aged 18 to 64 years with underlying medical conditions (n=1659). In total, 13,555 participants (age: mean 53.1, SD 15.9 years) provided valid responses, with a 52.1% follow-up rate. Methods: Prospective cohort, web-based, self-administered surveys were conducted in Japan at 3 time points: February 2021, September to October 2021, and February 2022. Objective: This study aims to illustrate a trend from prior COVID-19 vaccine intention, when the vaccine was not available, to the actual uptake within 1 year when all residents had access to the vaccine, to illustrate a change of reason for getting vaccinated or not getting vaccinated and to examine whether priority settings predicted subsequent vaccination uptake. However, trends between vaccine intention and uptake, as well as reasons for getting vaccinated or not getting vaccinated, among these groups were understudied, undermining verification of the legitimacy of priority selection. Because of various limitations, priority settings for vaccination were determined at the time of mass vaccination. Online Journal of Public Health Informaticsīackground: Distributing COVID-19 vaccines to the public was an important task for the governments of each country.Asian/Pacific Island Nursing Journal 11 articles.JMIR Bioinformatics and Biotechnology 35 articles.JMIR Biomedical Engineering 69 articles.Journal of Participatory Medicine 80 articles.JMIR Perioperative Medicine 91 articles. ![]()
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