Genital chlamydia is the leading sexually transmitted infection in Europe and the cause of considerable acute morbidity and long term reproductive health problems, particularly in young people.
Sindbis virus is widely and continuously found in insects, such as Culex mosquitoes, in Eurasia, Africa, and Oceania. However, clinical infection in humans has almost exclusively been reported in northern Europe where it is endemic and where large outbreaks occur intermittently.