McDonald’s Corp experienced a 6.15% drop in pre-market trading on Wednesday. This decline follows a report from the U.S. Centers for Disease Control and Prevention (CDC) linking an E. coli outbreak to McDonald’s Quarter Pounder burgers. What Happened: The CDC is actively investigating the outbreak, with 49 individuals affected, 10 hospitalized, and one fatality reported. The outbreak spans 10 states in the West and Midwest. This development comes just before McDonald’s is set to release its third-quarter earnings on Tuesday, October 29. At the time of writing, McDonald’s was trading at $295.51…