So we are always taught that STDs come from sexual contact with a person that has been infected.
But how does the infected person get infected in the first place?
There has to be a primary way where someone get infected (not through sex) and then transmits that to others through sex right?
I would imagine that bec we do have treatments for STDs they would go extinct if the only way of getting and STD was through sex. But that isn’t the case.
In: Biology
Yes and no. STI’s are a broad category – many different afflictions fall under it. They can all spread through other means, *but* some of them are *almost* exclusive to sex.
Your assumption about the diseases dying out if they only spread through sex is just not based in reality. The way diseases work is by jumping from person to person, and the fact that the process is sex doesn’t really change that. People have been shagging since the dawn of humanity, and just like with almost any disease the germs we deal with today are just the descendants of the germs dealt with by our ancestors.
Back to it, other possible ways of spreading just depend a *lot* on the disease. Herpes, for instance, spreads through contact. It is most common to have on the face, but the infection can be passed to another’s genitals through oral sex. HIV can spread through poor hygiene while using needles. Crabs can be transmitted through shared clothing.
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