Washington, United States (AFP) – A Twitter imposter cost a US pharmaceutical giant billions of dollars, but the viral prank triggered another unexpected crisis — a new wave of scrutiny of the high cost of its insulin. Authentic-looking fake accounts proliferated last week after Twitter rolled out a paid verification service, the latest in a string of chaotic developments since Elon Musk’s blockbuster $44 billion buyout of the influential platform. Among the victims was drugmaker Eli […]