A second COVID-19 vaccine booster dose is effective and safe for older adults. This study investigated hesitancy to take up a second COVID-19 vaccine booster dose and its determinants among older adults in Hong Kong. Participants were Chinese-speaking community-dwelling adults aged 65 years or above. https://www.bekindtopets.com/super-value-Keychron-M4-Wireless-4K-Mouse-flash-choice/