NEW DELHI : India reported 16,000 new coronavirus cases on Wednesday, its highest daily increase since the outbreak began, and the government called in the army to manage new treatment centres with thousands of additional hospital beds in New Delhi.At more than 456,000 confirmed coronavirus cases so far, India is the fourth worst hit country in the world, behind the United States, Brazil and Russia, according to a Reuters tally.Cases are expected to keep rising as state governments ease restrictions in place since lockdown was first imposed in late March.New Delhi, the sprawling capital of more than 20 million people, also recorded its highest single-day increase on Wednesday, with more than 3,900 cases.