Background/Purpose: In 2008, CDC held the Chlamydia Immunology and Control Expert Advisory Meeting to explore: 1) the key questions related to Chlamydia trachomatis natural history and immunobiology with implications for control programs; 2) how existing data shed light on these key questions; and 3) research needs to address remaining gaps in knowledge.

Objectives of Symposium: To describe salient findings from the 2008 meeting and discuss implications for chlamydia control efforts.

Implications for Programs, Policy, and/or Research: A better understanding of the nature and timing of immune responses leading to C. trachomatis infection clearance, pathogenesis, and protective immunity would guide optimal structuring of chlamydia control activities.