A medical worker prepares inhalable COVID-19 vaccine doses at a community health service center in Tianxin District of Changsha, central China's Hunan Province, Dec. 22, 2022. Inhalable COVID-19 vaccines are available at many vaccine sites in Changsha now as the epidemic continues to rage. China has approved the inhalable vaccine for emergency use among populations aged 18 and above who had received two doses of traditional vaccines, but not within the previous six months.(Photo: Xinhua)
A medical worker (L) instructs a resident to receive inhalable COVID-19 vaccine at a community health service center in Tianxin District of Changsha, central China's Hunan Province, Dec. 22, 2022. Inhalable COVID-19 vaccines are available at many vaccine sites in Changsha now as the epidemic continues to rage. China has approved the inhalable vaccine for emergency use among populations aged 18 and above who had received two doses of traditional vaccines, but not within the previous six months.(Photo: Xinhua)
A resident (R) receives a dose of inhalable COVID-19 vaccine at a community health service center in Tianxin District of Changsha, central China's Hunan Province, Dec. 22, 2022. Inhalable COVID-19 vaccines are available at many vaccine sites in Changsha now as the epidemic continues to rage. China has approved the inhalable vaccine for emergency use among populations aged 18 and above who had received two doses of traditional vaccines, but not within the previous six months.(Photo: Xinhua)