Close-up of medical vial with the flag of China and a blurred doctor on the background. Selective focus. Concept of Covid vaccination campaign in China Close-up,Of,Medical,Vial,With,The,Flag,Of,China,And Sizes: 150 × 150 / 300 × 180 / 768 × 461 / 600 × 360 / 175 × 131 / 833 × 500 / 45 × 45 / 870 × 522
