You're right: avoid kissing anyone with visible cold sores on the mouth area as type 1 herpes (HSV-1) can be transmitted through kissing. However, most of us have been exposed to this virus by the time we're in grade school…in fact, about half of the U.S. read more
Relax. No risk. This initial response is after reading only the title you chose for your question and the very first line: No STD is transmitted by saliva, and hand-genital contact carries no appreciable risk for any STD, even if saliva is used as lubricant. read more
STDs are sexually transmitted diseases. This means they are most often -- but not exclusively -- spread by sexual intercourse. HIV, chlamydia, genital herpes, genital warts, gonorrhea, some forms of hepatitis, syphilis, and trichomoniasis are STDs. read more