In this article I discuss the dilemma between coercion and respect for civil liberties that characterized policies for the prevention of venereal diseases during the nineteenth century. Placing Danish legislation in an international perspective, the gradual change from control of prostitution to the so-called Scandinavian Sonderweg is analysed. Special emphasis is given to parliamentary discussions on the law of 1906, with a view to disentangling the survival of traditional attitudes to sexual morality from burgeoning conceptions of universal welfare policies.