We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleSentinel versus population-based surveillance of pneumococcal conjugate vaccine effectivenessAuthorsHampton, Lee; Zell, Elizabeth; Schrag, Stephanie; Cohen, AdamPublicationBulletin of the World Health Organization, 2012, Vol 90, Issue 8, p568ISSN0042-9686Publication typearticleDOI10.2471/blt.11.098178