A vaccine composition comprising a polysaccharide conjugate antigen adsorbed onto aluminium phosphate.

The invention relates to a vaccine formulation for the prevention of Hacmophilus Influenzae Type B (Hib) infections and where the , antigen is adsorbed OHIO aluminium phosphate. The invention also relates to a muitivalem vaccine, that is a vaccine for the amelioration or ' treatment of more than one disease states. The present invention also relates to the production and use of such vaccines in medicine.