At the beginning of this year, many people in India thought the worst of the pandemic was finished there. But in the last few weeks, any sense of ease has given way to widespread fear. The country is suffering from the worst coronavirus outbreak in the world, with people being turned away from full hospitals and a scarcity of medical oxygen.  How did India, after successfully containing the virus last year, get to this point? Guest: Jeffrey Gettleman, the South Asia bureau chief for The New York Times, based in New Delhi.