A medical worker take out a dose of vaccine from a refrigerator in a mobile vaccination vehicle in Haidian District of Beijing, capital of China, April 11, 2021. Beijing and Shanghai have deployed mobile vaccination vehicles in downtown areas. The bus-like facilities, equipped with vaccination stations, medical refrigerators and first-aid equipment, have been rolled out to save time and improve inoculation efficiency. (Xinhua/Ren Chao)
