The document summarizes key information about Treponema, including that it is a genus of bacteria that includes the pathogen that causes syphilis, Treponema pallidum. It describes the morphology of Treponema as slender, spiral bacteria that are difficult to see. It then outlines the stages of syphilis infection, from the initial chancre lesion to potential late-stage impacts on the skin, mucosa and organs. The document concludes with methods for diagnosing syphilis through direct detection of the pathogen or antibody assays, as well as penicillin as the treatment of choice.