、
People wait to refill oxygen cylinders for COVID-19 patients at Jangpura area in New Delhi, India, on May 5, 2021. (Photo by Partha Sarkar/Xinhua)
People wait to refill oxygen cylinders for COVID-19 patients at Jangpura area in New Delhi, India, on May 5, 2021. (Photo by Partha Sarkar/Xinhua)