A medical worker administers a dose of COVID-19 vaccine to a senior resident in Hufeng Village of Wenchang, south China's Hainan Province, Dec. 22, 2022. The door-to-door services have been offered to help the elderly get COVID-19 vaccinations in the city of Wenchang. (Xinhua/Pu Xiaoxu)
Medical workers walk to provide COVID-19 vaccination for senior residents at a community in Wenchang, south China's Hainan Province, Dec. 23, 2022. The door-to-door services have been offered to help the elderly get COVID-19 vaccinations in the city of Wenchang. (Xinhua/Pu Xiaoxu)
A medical worker administers a dose of COVID-19 vaccine to a senior resident at a community in Wenchang, south China's Hainan Province, Dec. 23, 2022. The door-to-door services have been offered to help the elderly get COVID-19 vaccinations in the city of Wenchang. (Xinhua/Pu Xiaoxu)