In the German capital, Berlin, a study by the erotic portal Erobella found notably high numbers of reported sexually transmitted diseases (STDs). The “STD City Index Germany” makes regional differences visible for the first time in a compact city ranking.
To assemble the index, the Robert Koch Institute (RKI) data for 2025 on incidence rates per 100,000 inhabitants for syphilis, HIV, and gonorrhea were used for 58 German cities as well as Berlin’s twelve districts. The result: Berlin’s districts occupy the top four spots in the ranking—at the very top is Friedrichshain-Kreuzberg, followed by Charlottenburg-Wilmersdorf, Mitte, and Neukölln. In tenth place is Lichtenberg. The district with the fewest infections in the capital is Steglitz-Zehlendorf, which overall sits at only 51st place.
Outside Berlin, Frankfurt am Main leads the STD list, followed by Cologne, Trier, and Fürth. The fewest sexually transmitted diseases per 100,000 residents were recorded in Erlangen, Gelsenkirchen, and Rostock.
Particularly for syphilis and gonorrhea, Berlin districts occupy the top positions. In HIV newly diagnosed infections, however, Fürth in Middle Franconia leads the list, followed by Chemnitz. Berlin-Mitte ranks third, followed by Hamburg and Munich.
The study is intended to be a “contribution to destigmatizing sexually transmitted diseases”
“This analysis is not meant to trigger panic, but to serve as an information resource and to encourage prevention,” Erobella.com said. “Safer sex is and remains the best protection against sexually transmitted diseases.”
Brenda Jensen, the head of science at Erobella.com, emphasized: “With this study, we want to contribute to the destigmatization of sexually transmitted diseases and highlight the importance of safer sex. Knowledge and prevention are the most effective tools in the fight against their spread.”
