Turkish President Recep Tayyip Erdogan (L) receives a dose of COVID-19 vaccine at a hospital in Ankara, Turkey, on Jan. 14, 2021. Erdogan on Thursday received his first dose of vaccine as Turkey has started mass vaccination against COVID-19. (Xinhua)

Turkish President Recep Tayyip Erdogan (L) receives a dose of COVID-19 vaccine at a hospital in Ankara, Turkey, on Jan. 14, 2021. Erdogan on Thursday received his first dose of vaccine as Turkey has started mass vaccination against COVID-19. (Xinhua)

Turkish President Recep Tayyip Erdogan (C) receives a dose of COVID-19 vaccine at a hospital in Ankara, Turkey, on Jan. 14, 2021. Erdogan on Thursday received his first dose of vaccine as Turkey has started mass vaccination against COVID-19. (Xinhua)