A mixture of three prebiotics does not affect vaccine specific antibody responses in healthy term infants in the first year of life

► We studied 164 infants in a RCT who were randomized to prebiotics or placebo added to formula feeding. ► We examined their immunoglobulin-G concentrations specific to Hib and tetanus immunizations. ► Prebiotics supplementation has no effect on vaccination specific antibody levels in young infants.