A medical worker prepares the COVID-19 vaccine at a hospital in Blida, Algeria, on Jan. 30, 2021. Algeria's COVID-19 vaccine rollout kicked off Saturday in the town of Blida, where the country's first case was reported in early 2020. The campaign is set to start nationwide with healthcare workers, the elderly and other vulnerable populations. (Xinhua)

A medical worker shows a vial of the COVID-19 vaccine at a hospital in Blida, Algeria, on Jan. 30, 2021. Algeria's COVID-19 vaccine rollout kicked off Saturday in the town of Blida, where the country's first case was reported in early 2020. The campaign is set to start nationwide with healthcare workers, the elderly and other vulnerable populations. (Xinhua)

A man receives the COVID-19 vaccine at a hospital in Blida, Algeria, on Jan. 30, 2021. Algeria's COVID-19 vaccine rollout kicked off Saturday in the town of Blida, where the country's first case was reported in early 2020. The campaign is set to start nationwide with healthcare workers, the elderly and other vulnerable populations. (Xinhua)