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    • Stability of the pneumococcal population structure in Massachusetts as PCV13 was introduced 

      Chang, Qiuzhi; Stevenson, Abbie E; Croucher, Nicholas J; Lee, Grace M; Pelton, Stephen I; Lipsitch, Marc; Finkelstein, Jonathan A; Hanage, William P (BioMed Central, 2015)
      Background: The success of 7-valent pneumococcal conjugate vaccination (PCV-7) introduced to the US childhood immunization schedule in 2000 was partially offset by increases in invasive pneumococcal disease (IPD) and ...