Uptake among four indicated vaccines by adults aged 65 years and older in Japan, 2023.

Various vaccinations are recommended for older adults; however, unlike childhood immunization programs, there is often no systematic immunization schedule for older adults, and management of the immunization schedule is the responsibility of the individuals. Self-managing immunization status can be challenging and potentially lead to missed vaccinations. This study aimed to describe the statuses and patterns of indicated vaccine uptake among older adults. This descriptive study utilized data from a large-scale nationwide internet survey in Japan (n = 6,828). Participants aged 65 years and older were asked about their immunization status for four vaccines in Japan: coronavirus disease 2019, influenza, pneumococcal, and herpes zoster vaccines. Overall, 6.8 % of the participants received all four vaccines, whereas 9.5 % had not received any of four vaccines. Many participants received one to three types of vaccinations (one type: 24.7 %, two types: 30.8 %, three types: 28.1 %). Attention should be focused on vaccine uptake among older adults.