
People line up to get COVID-19 vaccination at a walk-in vaccination center in University of Malta, Msida, Malta, on July 19, 2021. Malta opened walk-in COVID-19 vaccination clinics for people without appointments on Monday. More mobile vaccination clinics are expected to be opened in the coming days to meet people's demand.(Photo: Xinhua)

People line up to get COVID-19 vaccination in Mosta, Malta, on July 19, 2021. Malta opened walk-in COVID-19 vaccination clinics for people without appointments on Monday. More mobile vaccination clinics are expected to be opened in the coming days to meet people's demand.(Photo: Xinhua)

People line up to get COVID-19 vaccination in Mosta, Malta, on July 19, 2021. Malta opened walk-in COVID-19 vaccination clinics for people without appointments on Monday. More mobile vaccination clinics are expected to be opened in the coming days to meet people's demand.(Photo: Xinhua)

People line up to get COVID-19 vaccination in Mosta, Malta, on July 19, 2021. Malta opened walk-in COVID-19 vaccination clinics for people without appointments on Monday. More mobile vaccination clinics are expected to be opened in the coming days to meet people's demand.(Photo: Xinhua)