A resident gets a booster shot of the COVID-19 vaccine at a community service center in Tianxin District of Changsha, central China's Hunan Province, Oct. 26, 2021. (Xinhua/Chen Zeguo)
A medical worker prepares a booster shot of the COVID-19 vaccine at a community service center in Tianxin District of Changsha, central China's Hunan Province, Oct. 26, 2021. (Xinhua/Chen Zeguo)
A resident gets a booster shot of the COVID-19 vaccine at a community service center in Tianxin District of Changsha, central China's Hunan Province, Oct. 26, 2021. (Xinhua/Chen Zeguo)
A resident gets a booster shot of the COVID-19 vaccine at a community service center in Tianxin District of Changsha, central China's Hunan Province, Oct. 26, 2021. (Xinhua/Chen Zeguo)