People register for COVID-19 vaccination during an open day event at a vaccination center in Bologna, Italy, on Jan. 16, 2022. (Photo by Gianni Schicchi/Xinhua)
People register for COVID-19 vaccination during an open day event at a vaccination center in Bologna, Italy, on Jan. 16, 2022. (Photo by Gianni Schicchi/Xinhua)
People register for COVID-19 vaccination during an open day event at a vaccination center in Bologna, Italy, on Jan. 16, 2022. (Photo by Gianni Schicchi/Xinhua)
People register for COVID-19 vaccination during an open day event at a vaccination center in Bologna, Italy, on Jan. 16, 2022. (Photo by Gianni Schicchi/Xinhua)
