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Chlamydia trachomatisRANK: SpeciesTAXONOMY: Chlamydiae -> Chlamydiia -> Chlamydiales -> Chlamydiaceae -> Chlamydia/Chlamydophila group -> Chlamydia -> Chlamydia trachomatis OVERVIEW: Chlamydia trachomatis (/kləˌmɪdiə/ /trəˈkoʊmətᵻs/), an organism responsible for the most prevalent STD in the United States, is one of four bacterial species in the genus Chlamydia. Chlamydia is a genus of pathogenic bacteria that are obligate intracellular parasites. C. trachomatis is a gram-negative bacterium. It is ovoid in shape and non-motile. The bacteria are non-spore-forming, but the elementary bodies act like spores when released into the host. |