In a trial of primary vaccination, concomitant administration of an investigational vaccine containing the same amount of conjugated Hib and MenC saccharides as in Menitorix with DTPa-HBV-IPV* and a licensed pneumococcal saccharide conjugated vaccine (the three injections were made into anatomically distant sites) gave similar immune responses to the seven pneumococcal serotypes as achieved in a group that received DTPa-HBV-IPV* concomitantly with Hib (conjugated to tetanus toxoid) and a licensed pneumococcal saccharide conjugated vaccine.