What causes a sexually transmitted disease in adolescents?

Sex and sexual activity can result in an STD or STI. Oral, anal, vaginal sex can spread an STI because the moist tissues in these areas make it easy for viruses and bacteria to travel from one host to another. But you also have to be careful when sexual activity does not include penetration. "Outercourse" or petting can put moist tissues close enough for the bacteria and viruses to travel even though intercourse does not happen. Even if you practice safer sex, the condom does not always cover areas that may be infected with a virus such as the scrotum for genital warts. 

Advice: When you have met someone you want to be sexually active with, both of you go get tested and practice safer sex every time. 

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.