Compositions for use in the prevention or treatment of necrotizing enterocolitis in infants or young children born by C-section

A method for treating necrotizing enterocolitis and/or decreasing incidence of necrotizing enterocolitis in an infant or young child born by C-section, the method comprising administering to the infant or young child born by C-section a composition comprising a mixture of human milk oligosaccharides, the mixture comprising 2′-fucosyllactose (2FL) that is 60 to 70 wt. % of the mixture, an N-acetylated oligosaccharide that is 20 to 30 wt. % of the mixture, and 6′ sialyllactose (6SL) that is 10 to 20 wt. % of the mixture, the N-acetylated oligosaccharide comprising lacto-N-tetraose (LNT) and lacto-N-neotetraose (LNnT) in a ratio LNT:LNnT between 2:1 and 1:1.