A health worker gives a dose of COVID-19 vaccine to a girl during vaccination for children aged 6 to 11 against COVID-19 in Yogyakarta, Indonesia, Dec. 21, 2021. (Photo by Supriyanto/Xinhua)
A health worker gives a dose of COVID-19 vaccine to a boy during vaccination for children aged 6 to 11 against COVID-19 in Yogyakarta, Indonesia, Dec. 21, 2021. (Photo by Supriyanto/Xinhua)
