ATLANTA — The Centers for Disease Control and Prevention on Sept. 26 concluded its investigation into an outbreak of Salmonella Mbandaka associated with Honey Smacks cereal manufactured by Battle Creek, Mich.-based Kellogg Co. The agency said a total of 135 people infected with the strain were reported from 36 states between March 3 and Aug. 29. Thirty-four people were hospitalized, but no deaths were reported.

“Epidemiologic and laboratory evidence indicated that Kellogg’s Honey Smacks cereal was the likely source of this multistate outbreak,” the C.D.C. said. “In interviews, ill people answered questions about the foods they ate and other exposures in the week before they became ill. Sixty-three (75%) of 84 people interviewed reported eating Kellogg’s Honey Smacks cereal. Ill people in this outbreak reported this cereal more often than any other cereals or food items.”

Kellogg recalled the cereal on June 14, but the Food and Drug Administration in early September became aware the cereal still was being offered for sale. At the time, the C.D.C. issued a statement telling retailers not to sell any Kellogg’s Honey Smacks because it could be contaminated with Salmonella and make people sick.