<prompt> Syphilis was first identified byFraenkelNicolaescuSchaudinn and HoffmanOgston  <response>: Treponema pallidum is the causative agent of syphilis, was first discovered by Schaudinn and Hoffmann in the chancers and inguinal lymph nodes of syphilitic patients. Ref: Textbook of microbiology; Ananthanarayan and panikers; 10th edition; Pg: 378 