Evidence that pneumococcal serotype replacement in Massachusetts following conjugate vaccination is now complete. Author(s): Hanage WP, Finkelstein JA, Huang SS, Pelton SI, Stevenson AE, Kleinman K, Hinrichsen VL, Fraser C|Journal: Epidemics|PMID: 21031138| June 2010 Invasive pneumococcal disease (IPD) has been reduced in the US following conjugate vaccination (PCV7) targeting seven pneumococcal serotypes in 2000.…