Sexually transmitted infections (STIs) are spread by
sexual contact involving the genitals, mouth, or rectum, and can also be spread
from a pregnant woman to her fetus before or during delivery. STIs, which
affect both men and women, are a worldwide public health concern.
Although most STIs can be cured, some cannot, including
HIV (which causes
AIDS),
genital herpes, and
human papillomavirus (HPV), which can cause
genital warts.
STIs can be spread by people who don't know they are infected. Always
use protection every time you have sex, including oral sex, until you are sure
you and your partner are not infected with an STI.
If you are in a relationship, delay having sex until you are
physically and emotionally prepared, have agreed to only have sex with each
other, and have both been tested for STIs.
Abstinence as prevention
Completely avoiding sexual contact (abstinence), including
intercourse or oral sex, is the only certain way to prevent an
infection.
Discuss safe sex with your partner
Discuss STIs before you have sex with someone. Even though a sex
partner doesn't have symptoms of an STI, he or she may still be
infected.
Questions to ask someone before having sex include:
- How many people have you had sex
with?
- Have you had sex without a condom?
- Have you ever
had unprotected oral sex?
- Have you had more than one sex partner at
a time?
- Do you inject illegal drugs or have you had sex with
someone who injects drugs?
- Have you ever had unprotected sex with a
prostitute?
- Have you ever had an STI, including
hepatitis B or
hepatitis C? Was it treated and cured?
Safe sex practices
Some STIs, such as HIV, can take up to 6 months before they can be
detected in the blood. Genital herpes and the human papillomavirus (HPV) can be
spread when symptoms are not present. Even if you and your partner have been
tested, use condoms for all sex until you and your partner haven't had sex with
another person for 6 months. Then get tested again.
- Watch for
symptoms of STIs, such as unusual discharge, sores,
redness, or growths in your and your partner's genital area, or pain while
urinating.
- Don't have more than one sex partner at a time. The
safest sex is with one partner who has sex only with you. Every time you add a
new sex partner, you are being exposed to all of the diseases that all of their
partners may have. Your risk for an STI increases if you have several sex
partners at the same time.
- Use a condom every time you have sex.
Latex and polyurethane condoms do not let STI viruses pass through, so they
offer good protection from STIs. Condoms made from sheep intestines do not
protect against STIs.
- Use a water-based lubricant such as K-Y
Jelly or Astroglide to help prevent tearing of the skin if there is a lack of
lubrication during sexual intercourse. Small tears in the vagina during vaginal
sex or in the rectum during anal sex allow STIs to get into your
blood.
- Avoid douching if you are a woman, because it can change the
normal balance of organisms in the vagina and increases the risk of getting an
STI.
- Be responsible. Avoid sexual contact if you have symptoms of
an infection or if you are being treated for an STI or HIV. If you or your
partner has herpes, avoid sexual contact when a blister is present and use
condoms at all other times.