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Following the licensure of 23-valent pneumococcal polysaccharide vaccine (23vPPV) in 1989, a risk-group-only immunization policy was implemented in 1992 in England. The PPV programme was extended in 2003 to include all individuals 65 years and over. In England, this was phased in over 3 years. To ascertain the performance of the risk group policy in those 65 years of age and over and provide a baseline to estimate the impact of the universal elderly programme.

Pneumococcal polysaccharide vaccine uptake in England, 1989–2003, prior to the introduction of a vaccination programme for older adults