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Chlamydia is a common sexually transmitted disease (STD) that can be easily cured. If left untreated, chlamydia can make it difficult for a woman to get pregnant.
Source: U.S. Centers for Disease Control and Prevention
To view print version: CDC - Chlamydia Fact Sheet
- What is chlamydia?
- How is chlamydia spread?
- How can I reduce my risk of getting chlamydia?
- Am I at risk for chlamydia?
- I’m pregnant. How does chlamydia affect my baby?
- How do I know if I have chlamydia?
- How will my doctor know if I have chlamydia?
- Can chlamydia be cured?
- What happens if I don’t get treated?
- Where can I get more information?
You can get chlamydia by having vaginal, anal, or oral sex with someone who has chlamydia.
If your sex partner is male you can still get chlamydia even if he does not ejaculate (cum).
If you’ve had chlamydia and were treated in the past, you can still get infected again. This can happen if you have unprotected sex with someone who has chlamydia.
If you are pregnant, you can give chlamydia to your baby during childbirth.
The only way to avoid STDs is to not have vaginal, anal, or oral sex.
If you are sexually active, you can do the following things to lower your chances of getting chlamydia:
- Be in a long-term mutually monogamous relationship with a partner who has been tested and has negative STD test results;
- Use latex condoms the right way every time you have sex.
Anyone who has sex can get chlamydia through unprotected vaginal, anal, or oral sex. However, sexually active young people are at a higher risk of getting chlamydia. This is due to behaviors and biological factors common among young people. Gay, bisexual, and other men who have sex with men are also at risk since chlamydia can spread through oral and anal sex.
Have an honest and open talk with your health care provider. Ask whether you should be tested for chlamydia or other STDs. If you are a sexually active woman younger than 25 years, you should get a test for chlamydia every year. If you are an older woman with risk factors such as new or multiple sex partners, or a sex partner who has an STD, you should get a test for chlamydia every year. Gay, bisexual, and other men who have sex with men; as well as pregnant women should also get tested for chlamydia.
If you are pregnant and have chlamydia, you can pass the infection to your baby during delivery. This could cause an eye infection or pneumonia in your newborn. Having chlamydia may also make it more likely to deliver your baby too early.
If you are pregnant, you should get tested for chlamydia at your first prenatal visit. Testing and treatment are the best ways to prevent health problems.
Most people who have chlamydia have no symptoms. If you do have symptoms, they may not appear until several weeks after you have sex with an infected partner. Even when chlamydia causes no symptoms, it can damage your reproductive system.
Women with symptoms may notice
- An abnormal vaginal discharge;
- A burning sensation when urinating.
Symptoms in men can include
- A discharge from their penis;
- A burning sensation when urinating;
- Pain and swelling in one or both testicles (although this is less common).
Men and women can also get infected with chlamydia in their rectum. This happens either by having receptive anal sex, or by spread from another infected site (such as the vagina). While these infections often cause no symptoms, they can cause
- Rectal pain;
You should be examined by your doctor if you notice any of these symptoms or if your partner has an STD or symptoms of an STD. STD symptoms can include an unusual sore, a smelly discharge, burning when urinating, or bleeding between periods.
Yes, chlamydia can be cured with the right treatment. It is important that you take all of the medication your doctor prescribes to cure your infection. When taken properly it will stop the infection and could decrease your chances of having complications later on. You should not share medication for chlamydia with anyone.
Repeat infection with chlamydia is common. You should be tested again about three months after you are treated, even if your sex partner(s) was treated.
The initial damage that chlamydia causes often goes unnoticed. However, chlamydia can lead to serious health problems.
If you are a woman, untreated chlamydia can spread to your uterus and fallopian tubes (tubes that carry fertilized eggs from the ovaries to the uterus). This can cause pelvic inflammatory disease (PID). PID often has no symptoms, however some women may have abdominal and pelvic pain. Even if it doesn’t cause symptoms initially, PID can cause permanent damage to your reproductive system. PID can lead to long-term pelvic pain, inability to get pregnant, and potentially deadly ectopic pregnancy(pregnancy outside the uterus).
Men rarely have health problems linked to chlamydia. Infection sometimes spreads to the tube that carries sperm from the testicles, causing pain and fever. Rarely, chlamydia can prevent a man from being able to have children.
Division of STD Prevention (DSTDP)
Centers for Disease Control and Prevention
CDC-INFO Contact Center
TTY: (888) 232-6348
CDC National Prevention Information Network (NPIN)
P.O. Box 6003
Rockville, MD 20849-6003
American Sexual Health Association (ASHA)
P.O. Box 13827
Research Triangle Park, NC 27709-3827