McDonald's says daily sales took a hit as some customers avoided its restaurants during the E. coli outbreak.Third-party data indicated foot traffic to the chain fell by more than 9% nationwide, with a 30% drop in Colorado.The company says the issue has been contained and doesn't expect a material impact on overall performance. Sign up to get the inside scoop on today’s biggest stories in markets, tech, and business — delivered daily. Read preview Thanks for signing up! Go to newsletter preferences ...