[Jean Alfred Fournier: to 180th anniversary].

Jean Alfred Fournier was professor in dermatology in Université de Paris and the director of the world-wide known venereology hospital of Saint Louisio. He is the author of many publications about clinical and social aspects of syphilidology. Fournier introduced the concept of "parasyphilis" (tabes dorsalis and general paralysis) and he was the first one who specified the relationship between these diseases and syphilis. He pointed out the significance of congenital syphilisio. In 1901 Fournier founded the French Society of sanitary and moral prevention. His ideas concerning syphilis control were implemented on the territories of many European countries.