Gonorrhea cases on the rise across Europe

April 29, 2019

Following a decline in notification rates in 2016, the number of gonorrhea cases has gone up by 17 percent across the reporting EU/EEA countries with more than 89,000 confirmed diagnoses in 2017—more than 240 cases a day.

The 2017 increase follows the overall trend over the last decade, during which 20 of the 28 EU/EEA countries consistently reporting, registered an increase in the number of notified gonorrhea cases. Since 2008, France and Portugal experienced a six-fold increase, Denmark and Ireland now record more than three times as many confirmed cases. Some of the reported increases over time could be the result of improved national surveillance systems and use of more sensitive tests.

After a small drop in 2016, gonorrhea notifications were on the rise again in the majority of the 27 reporting countries in 2017. Some countries noted striking year-on-year increases of more than 40 percent, like Finland and Sweden.

Earlier this year, results from ECDC’s sentinel European Gonococcal Antimicrobial Surveillance Program showed a persistent level of resistance of Neisseria gonorrhoeae to azithromycin, which compromises the recommended dual therapy with ceftriaxone and azithromycin.

Men who have sex with men (MSM) accounted for almost half of the gonorrhea cases (47 percent) in 2017. The rise in notified cases among women between 2016 and 2017 (from 9.5 to 11 per 100,000 population) is concerning as untreated gonorrhea can lead to pelvic inflammatory disease or cause infertility.

“We have to also bear in mind that the numbers we see do not even show the true extent of the gonorrhea epidemic in Europe. Many infections are not diagnosed due to lack of symptoms or limited access to diagnostics or simply are not reported,” Spiteri continues.

Correspondingly, rates of reported gonorrhea infection vary considerably across Europe from below one to 75 cases per 100,000 population, with higher rates in northern Europe. While this variation could be linked to real differences in incidence of gonococcal infection, they are likely influenced by different testing policies and methods, healthcare systems and access to services as well as reporting and surveillance system structures.

With 558,155 confirmed cases between 2008 and 2017, gonorrhea is the second most notified sexually transmitted infection in the EU/EEA after chlamydia (3,826,299 cases during the same time period).

ECDC has the full report