A devastating surge in coronavirus infections has exposed India's dilapidated health infrastructure and a deep shortage of medical oxygen. Experts have for years raised the alarm about shortages of oxygen in India and other poor countries, but the extra strain caused by Covid-19 has led to a catastrophic situation. The World Health Organization estimates one person in five suffering from Covid-19 needs oxygen as an essential part of their treatment. With cases surging around the world, advocates are warning other countries with chronic shortages may be at risk for a repeat of an India-like situation.