The world saw the largest daily increases yet in coronavirus cases, with infections soaring in India’s rural villages after migrant workers fled major cities. India’s coronavirus caseload climbed by nearly 15,000 as of Monday to 425,282, with more than 13,000 deaths, the health ministry reported. After easing the nationwide lockdown, the Indian government has run special trains to return thousands of migrant workers to their natal villages in recent weeks. Nearly 90% of India’s poorest districts have cases, though the outbreak remains centered in Delhi, Maharashtra and Tamil Nadu states, which are home to major cities. Infections slowed in China and South Korea, suggesting some progress in stemming their newest outbreaks. But despite clear headway in containing the virus in regions that suffered early outbreaks, globally the number of new virus cases has soared in recent days. In Brazil, Iraq, India and the United States, hospitals are scrambling to cope.