How can you get a sexually transmitted disease?

How can you get a sexually transmitted disease?
You can get a sexually transmitted disease by embracing, shaking hands, or stand next to an infected person. Neither the toilet.
The most common STDs are spread through vaginal, oral or anal. Many people with a sexually transmitted disease have no symptoms, so you can not tell if your sexual partner has an STD or not.

If you share needles with an infected person can be infected. If you have sex with someone who you share needles can be infected. HIV can also be transmitted from an infected mother to her baby.