Senior citizens are sitting in rows as they wait to be called for COVID-19 vaccinations at a public sports center in Seoul's northeastern district of Jungnang on June 3, 2021. (Yonhap)
Senior citizens are seated in rows as they wait to be called for COVID-19 vaccinations at a public sport center in Seoul's northeastern district of Jungnang on June 3, 2021. (Yonhap)