The epidemiology of selected venereal diseases in the Czech Republic has been carefully evaluated for many years. This report containing data from the period 1981-2011 from the eastern Bohemia shows a sharp decrease in the incidence of gonorrhea in 1993-1994 and very low incidence thereafter with slightly higher prevalence in males.
However, syphilis and genitourinary infection by Chlamydia trachomatis show entirely opposite trends. Also, for the similar number of diagnostic tests performed, chlamydia showed 10 fold higher ratio of positive cases.
This underscores the changing epidemiology of STIs and necessity for adapting the reporting algorithms.