A 2nd wave of US virus cases will plunge the economy into a depression, Moody's economist warns

· A second wave of coronavirus cases would quash hopes for a swift recovery and push the US into a depression, Mark Zandi, chief economist at Moody's Analytics, told CNBC on Friday.
· States have begun reopening their economies to keep businesses afloat, but public health experts warn a return to pre-virus norms could drive a...