Advertisement McDonald's is investing 100millionintorecoveringfromanE.colioutbreak,CNNreported.McDonald′ssaidtheoutbreakledtoadropinrestaurantvisitsandsales.Marketingandfranchisesupportarekeystrategiesinitseffortstoregaincustomertrust.McDonald′sisreportedlyspending100 million to lure customers back to stores following an E. coli outbreak linked to slivered onions served on Quarter Pounder hamburgers.$35 million of the investment is going toward marketing, including ...