Oil prices mixed on Thursday as traders weighed reports that AstraZeneca had acknowledged a mistake in the vaccine dosage received by some study participants in its late-stage COVID-19 trials against hopes for massive US economic stimulus under the incoming Joe Biden administration. On the data front, US crude inventories fell by 754 thousand barrels in the latest week, according to EIA data, beating forecasts of a 127 thousand rise and compared to a 3.8 million barrels increase reported by API the day before. At around 07:15 AM GMT, WTI crude fell 0.13% to $45.65 a barrel, but not far from eight-month highs touched in the previous session. Meantime, Brent crude was almost unchanged at $48.62 a barrel.