Montgomery County Health officials say E. coli sickened at least 10 people who ate at a picnic on July 3rd in Germantown, southwest of Dayton. Department spokesperson Bill Wharton says six of the ten were hospitalized. 200 to 300 people attended the customer appreciation picnic at a lawn care business. A physician who treated some of the patients says it's possible they ate from the same contaminated dish. Health officials are trying to track the source of the bacteria.