(Bloomberg) -- Novavax Inc. said there’s substantial doubt about its ability to stay in business through next year, the latest warning from the company after it struggled to develop and sell a Covid-19 vaccine. Most Read from BloombergElon Musk Regains His Spot as the World’s Richest PersonNigeria Latest: Tinubu Wins in Six States; Obi Takes ThreeApple Suppliers Are Racing to Exit China, AirPods Maker SaysTD Bank to Pay $1.2 Billion to End Suit Tied to Ponzi SchemeHong Kong Ends One of World’s L