TECHNOLOGY FOCUS - FOOD - Preparation: The sewage water sample (50 ml; whose pH was adjusted to 7) was centrifuged for 10 minutes at 2500 g, the supernatant was filtered, the sample was maintained at 4degreesC for 1-2 days, the bacteriophages were isolated using biological tests, amplified and stored.Preferred Components: The food product is in the form of a milk based product, a nutritional composition, a pet food, a dietary supplement or any food at risk of contamination by Enterobacter sakazakii.(I) has the ability to infect:(i) at least 9 bacterial strains of E.sakazakii (FSM-16; FSM-33; FSM-261; FSM-265; FSM-266, FSM-269; FSM-270; FSM-271; FSM-272; FSM-273; FSM-274; FSM-280; FSM-281; FSM-284; FSM-286; FSM-288; FSM-290; FSM-292; FSM-297; FSM-298; FSM-300; FSM-303; FSM-305; FSM-308; FSM-309; FSM-311; FSM-313; FSM-314; FSM-316; FSM-318; FSM-322; FSM-323; FSM-1360; FSM-1387-2NL; FSM-MC7; FSM-MC8; FSM-MC9; FSM-MM10 or FSM-MM11) in a test on solid medium using the spot assay test; and(ii) at least 9 bacterial strains of E.sakazakii (FSM-16; FSM-33; FSM-261; FSM-265; FSM-266, FSM-269; FSM-270; FSM-271; FSM-272; FSM-273; FSM-274; FSM-280; FSM-281; FSM-284; FSM-286; FSM-288; FSM-290; FSM-292; FSM-297; FSM-298; FSM-300; FSM-303; FSM-305; FSM-308; FSM-309; FSM-311; FSM-313; FSM-314; FSM-316; FSM-318; FSM-322; FSM-323; FSM-1360; FSM-1387-2NL; FSM-MC7; FSM-MC8; FSM-MC9; FSM-MM10 or FSM-MM11) in liquid medium.(I) deposited under the reference CNCM I-3127, CNCM I-3128, CNCM I-3129, CNCM I-3130, CNCM I-3131, CNCM I-3132 or CNCM I-3133. The milk-based product is fermented milk, a yogurt, a curd, a cheese, a fresh cheese, a fermented product, renneted milk, a drink, a milk based powder, an infant formula or a dried powdered infant formula. (I) or cocktail is to prevent contamination and outgrowth of E. sakazakii in the product. (I) is present in at least 1.104 pfu per ml or gram if solid, of the food product. The food product is a milk based product, such as a fermented milk, a yogurt, curd, cheese, fresh cheese, milk based fermented products, renneted milk, drinks, milk based powders, an infant formula, a dried powdered infant formula; a non-milk fermented product; a soy-based product, a nutritional formula, a dairy product, a chilled or shelf stable beverage, water, soup, a dietary supplement, a meal replacement, a nutritional bar or a confectionery, a pet food product, a sweet or sweetened beverage, an icecream, a confectionery bar, breakfast cereal flakes or bars or nutritional supplement for clinical nutrition or any food at risk of contamination by E. sakazakii.