How are STI and STD spread? If two people have not had any sexual contact with any other person can an STI or STD be spread through anal or oral sex?
Person to person. STDs are spread from person to person in various ways. Some through transmission of fluids (gonorrhea, chlamydia, trichomoniasis, HIV). Others are spread through contact (Herpes, syphilis, HPV). One of you would have to have an STD to give it to the other. If neither person has ever had any sexual contact of any kind then they can not spread and STD.
Sometimes. If the infecting organism gets to the mouth by contact with an infected area one one person, another person could get the infection by kissing, but if is unusual. Read more...