[Pneumococcal polysaccharide immunization strategies in Italian regions].

The aim of this study is to describe the immunization strategies for 23-valent pneumococcal vaccine in the Italian regions. Sixteen regions offer pneumococcal vaccine to elderly people and 18 regions to risk groups. Nine among them offer the vaccine free of charge and perform the call for immunization. Five regions created a database of the risk groups. Data about vaccination coverage are available for seven regions; in the other only the number of administered doses is collected yearly. Different immunization strategies may represent a determinant of health inequalities.