![Decline in Invasive Pneumococcal Disease after the Introduction of Protein–Polysaccharide Conjugate Vaccine]()
Decline in Invasive Pneumococcal Disease after the Introduction of Protein–Polysaccharide Conjugate VaccineWhitney, Cynthia G.; Farley, Monica M.; Hadler, James; Harrison, Lee H.; Bennett, Nancy M.; Lynfield, Ruth; Reingold, Arthur; Cieslak, Paul R.; Pilishvili, Tamara; Jackson, Delois; Facklam, Richard R.; Jorgensen, James H.; Schuchat, Anne · New England Journal of Medicine · 2003