STD's, I've always wondered.... Options

[emberfly]

Where do they come from?

People have said that they come from having alot of sex, but that's probably the most vague answer there is.

They just magically appear after you've done a certain number of people?

Exactly how to they come to be?

[Gigi]

You need to take some bio classes STAT if you don't know how viruses, bacteria, whatever, mutate. Seriously. STD's, STI's etc mutate in the exact same way as ANY OTHER DISEASE. So I'm wondering why you don't wonder how we get the flu, or chicken pox, or any other disease you can think of.

"What do you have to do?" Okay, let's get this straight, nobody woke up one morning and thought to make a horrifying disease and then spread it around maliciously. Diseases don't (usually) develop because of mad scientists with tie-dye lab coats trying to spread fear around the universe. The world is not a Heroes episode. You really need to take some low-level science courses, but basically diseases mutate because while DNA gets replicated (cells multiply and divide), sometimes mistakes are made in the genetic code and mutations occur. Mutations happen all the time. Your body is making cells right now, some of which probably contain mutations in the genetic code. This is in fact how chimpanzees have evolved into humans. Mutations are not caused solely by radioactive substances or exposure to an atomic bomb, but it's an everyday occurrence. Basically that is how new bacteria, viruses, etc, get formed.

Crash course in bio. And even if Google didn't give you the full answer, you could've just Googled "how do viruses mutate" and come up with more answers. Jesus, why do we need to baby you into learning things? You are going to suffer in university.