The epidemiology of selected sexually transmitted diseases in the Czech Republic has been carefully evaluated for many years. Data from 1981-2011 for eastern Bohemia shows a sharp decrease in the incidence of gonorrhea in 1993-1994 and a very low incidence thereafter with a slightly higher prevalence in males.
However, syphilis and genitourinary infections with Chlamydia trachomatis show entirely opposite trends. Also, for the similar number of diagnostic tests perfomed.
Chlamydia had a 10 fold higner rate of positive results. This underscores the changing epidemiology of sexually transmitted infections (STI) and necessity for adapting the reporting algorithms accordingly.