What is effective in STD Prevention?
GROUND: When in 2001 in Germany the new act for control of infectious diseases came into force, mandatory checks for prostitutes were abolished. The consequences of this paradigm shift in STD prevention are being judged controversially even today. The public health department of the city of Cologne, like others, adapted its programme, staff, equipment, and diagnostic procedures to the new requirements. The department for venereal disease control was converted into a walk-in-clinic for STD and now forms part of a comprehensive STD and Aids prevention unit. The present article illustrates the changes by comparing the clients and the STD numbers of the years 1994 and 2004. METHOD: The following data were compared: number of consultations, number of clients regarding sex, occupation in sex business, health insurance, national or ethnic background, frequency of consultation, number of STD. RESULTS: In 1994, almost all clients of the department for venereal disease control were female prosti