Is it true that doctors say it is impossible to contract an STD?
No, there are other ways. Technically the term STDs is incorrect, but theyre called that way because thats the most common way for them to spread. But from an official point of view, theyre blood diseases. The bacteria or viruses live in the blood of the infected person, from there they also infect the sexual organs. But any contact of blood or other infected body fluid can cause the disease to spread.