It sounds simple. You catch a sexually transmitted disease by having sex.
For many sexual intercourse only refers to vaginal intercourse, but that way of thinking can increase the likelihood of spreading disease.
Sexually transmitted diseases can be spread through vaginal, oral and anal sex, and in some cases even kissing.
A national survey of teens conducted by the Kaiser Family Foundation found that 26 percent of sexually active teens between 15 and 17 years of age did not believe you could get infected with HIV through unprotected oral sex. That fact is HIV and other STDs can be transmitted through oral sex.
Having unprotected anal sex is considered the riskiest form of sexual activity when it comes to STDs – for straight and gay couples. As the anus does not self-lubricate, is narrow and has fragile skin that tears easily, it is much easier for diseases to enter the bloodstream.
Though kissing may seem innocent, you can catch oral herpes – cold sores and fever blisters – from kissing someone with the virus. About 80 to 90 percent of adults have oral herpes, according to the American Social Health Association. To reduce the risk of spreading or contracting oral herpes, do a quick inspection of your partner’s lips before puckering up.