The main U.S. stock market indexes closed modestly higher on Wednesday, as easing government bond yields boosted risk appetites while a dramatic rally in shares of vaccine-maker Moderna drove gains in the healthcare sector. Investors barely reacted to minutes from the U.S. Federal Reserve’s July meeting, which showed deepening concern about inflation with “several” policymakers ready to raise interest rates. “Many” said a rate hike would be needed if inflation does not decline to the U.S….
