In the course of this year we have seen with great surprise that the number of patients with early syphilis lesion, increased by growing form which undoubtedly led us to make a detailed study about choosing two centers of high turnout in adults and different location "Workers Hospital Obrero de Lima and Callao Policlinico" patients, who were diagnosed in a period of four months 220 cases of primary syphilis, confirmed by the presence of treponemes in dark field, the main focus of pollution-called red light district of Victoria.