Dec 22 (Reuters) - Energy stocks dragged Canada’s main stock index lower at the open on Tuesday, as oil prices fell on concerns of a new, fast-spreading strain of coronavirus in the United Kingdom hurting a recovery in fuel demand. * At 9:35 a.m. ET (14:35 GMT), the Toronto Stock Exchange’s S&P/TSX composite index was down 5.28 points, or 0.08%, at 17,495.61. (Reporting by Amal S in Bengaluru; Editing by Ramakrishnan M.)