June 18 (Reuters) - Canada's main stock index opened lower on Thursday, with fear over a rise in the number of coronavirus cases souring sentiment even as U.S. weekly jobless claims indicated signs of an economic recovery.
* At 9:31 a.m. ET (13:31 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 77.82 points, or 0.5%, at 15,350.87.