edical Library About PubMed =ealth chttp://www.ncbi.nlm.nih.gov/pubmedhealth/about/> I • Home <http://www.ncbi.nlm.nih.gov/pubmedhealthk • Help PubMed Health Search Home > Diseases and =onditions > Chlamydia Print A.D.A.M. Medical =ncyclopedia. Last reviewed: June 7, 2010. Causes, incidence, and risk =