BRUSSELS: The European Commission wants to reach a deal with Moderna Inc for the supply of millions of doses of its COVID-19 vaccine candidate for a price below $25 per dose, an EU official involved in the talks said.Moderna said on Monday its experimental vaccine was 94.5% effective in preventing COVID-19, based on interim data from a late-stage clinical trial, becoming the second developer to report results that far exceeded expectations, after Pfizer and BioNTech said last week their vaccine candidate was more than 90% effective.The EU has been in talks with Moderna for its experimental COVID-19 vaccine at least since July, an internal EU document seen by Reuters shows.