Which sexually transmitted infection STI has no cure?
Viruses such as HIV, genital herpes, human papillomavirus, hepatitis, and cytomegalovirus cause STDs/STIs that cannot be cured. People with an STI caused by a virus will be infected for life and will always be at risk of infecting their sexual partners.
What is the most common non curable STD?
Herpes. Genital herpes is a common STD, but most people with the infection do not know they have it. While there is no cure, there are medicines available that can prevent or shorten outbreaks.