* AstraZeneca says COVID-19 vaccine can be 90% effective
* Trump, officials give nod to formal Biden transition
* OPEC experts meet ahead of next week's crucial gathering
* Coming up: API inventory data at 2130 GMT
By Jessica Jaganathan
SINGAPORE, Nov 24 (Reuters) - Oil prices held gains on Tuesday as news of a third promising vaccine candidate spurred hopes of a quick recovery in oil demand, while U.S. President-elect Joe Biden received the go-ahead to begin his presidential transition.
Brent crude futures LCOc1 rose 3 cents, or 0.1%, to $46.09 a barrel by 0113 GMT, while U.S. West Texas Intermediate crude CLc1 added 11 cents, or 0.3%, to $43.17 a barrel. Both benchmarks settled up about 2% on Monday after gaining about 5% last week.
"Oil prices are consolidating near three-month highs after a third successful coronavirus vaccine trial, better-than-expected flash PMI readings across Europe and the U.S.," said Edward Moya, senior market analyst at OANDA.
AstraZeneca AZN.L said on Monday its COVID-19 vaccine was 70% effective in pivotal trials and could be up to 90% effective, giving the world's fight against the global pandemic a third new weapon that can be cheaper to make, easier to distribute and faster to scale-up than rivals. follows positive trial results from Pfizer/BioNTech and Moderna.
Uncertainties surrounding U.S. post-election disputes also started clearing after President Donald Trump on Monday allowed officials to proceed with a transition to President-elect Joe Biden, giving his rival access to briefings and funding even as he vowed to persist with efforts to fight the election results. crude oil inventories likely edged lower last week, while distillate stockpiles were seen decreasing for a 10th straight week, a preliminary Reuters poll showed on Monday. poll was conducted ahead of reports from the American Petroleum Institute on Tuesday and the Energy Information Administration (EIA) on Wednesday.
Traders also focused on a week of technical meetings by OPEC and its allies to prepare the ground for next week's ministerial gathering, which is set to discuss extending oil output curbs into next year due to weak demand amid a second wave of COVID-19.