TOKYO (Reuters) - Oil prices edged lower on Wednesday on concerns over an unexpected jump in U.S. oil inventories last week, but positive news on COVID-19 vaccines lifted investors hopes for a recovery in fuel demand, capping losses. Brent crude futures slipped 13 cents, or 0.3%, to $48.71 a barrel by 0151 GMT, having gained 5 cents the previous day. U.S. West Texas Intermediate (WTI) crude futures dropped 15 cents, or 0.3%, to $45.45, after shedding 16 cents on Tuesday. The American Petroleum Institute (API) said on Tuesday that U.S. crude oil, gasoline and distillate stocks rose sharply last week, with crude stocks jumping by 1.14 million barrels, contrary to analyst forecasts in a Reuters poll for a draw of 1.42 million barrels. [API/S] Official weekly oil data from the U.S. Energy Information Administration (EIA) is due on Wednesday. [EIA/S] “The recent rally looks to be overdone from a fundamental point of view, given rising oil output in Libya and the United States with weaker fuel demand across the globe,” said Kazuhiko Saito, chief analyst at Fujitomi Co. “But the bullish tone is likely to continue amid hopes the pandemic can be brought under control with vaccines next year.” Britain began mass-vaccinating its people on Tuesday in a global drive that poses one of the biggest logistical challenges in peacetime history. Pfizer cleared another hurdle on Tuesday when the U.S. Food and Drug Administration released documents that raised no new red flags over the safety or efficacy of the vaccine it developed with Germany’s BioNTech. The vaccine news helped offset fears from a sharp rise in coronavirus cases globally that has led to a string of renewed lockdowns, including strict measures in California, Germany and South Korea. Hedge fund managers were substantial buyers of petroleum futures and options last week for the fourth week in a row, a sign of increasing confidence that coronavirus vaccines will drive a recovery in oil consumption next year. The EIA said on Tuesday that U.S. crude oil production is expected to slide next year by 240,000 barrels per day (bpd) to 11.10 million bpd, a smaller decline compared to a previous forecast for a slide of 290,000 bpd.