Vaccination against pneumococcal disease caused by those pneumococcal types included in the vaccine in selected individuals age ≥2 yr w/ chronic CV disease, chronic pulmonary disease or DM, w/ alcoholism, chronic liver disease or CSF leaks, w/ functional or anatomic asplenia, living in special environments or social settings, w/ HIV infection, leukemia, lymphoma, Hodgkin's disease, multiple myeloma, generalized malignancy, chronic renal failure or nephrotic syndrome; those receiving immunosuppressive therapy, organ or bone marrow transplant; routine vaccination for persons ≥50 yr of age.