Zum Hauptinhalt springen

Chlamydien

Etwa 3 bis 7 von 100 sexuell aktiven jungen Menschen im Vereinigten Königreich sind mit Chlamydien infiziert. Am häufigsten tritt die Infektion bei Personen unter 25 Jahren auf.

Auf einen Blick

  • Chlamydia is a sexually transmitted infection (STI), caused by bacteria.

  • Most people get chlamydia by having sex with an infected person.

  • Around 7 in 10 women and 5 in 10 men with chlamydia have no symptoms.

  • Your doctor can test for chlamydia using a urine sample or a swab.

  • Chlamydia is treated with a short course of antibiotic medicine.

  • If untreated, chlamydia can lead to serious complications such as pelvic inflammatory disease.

  • You can get screened for chlamydia at your GP surgery, a clinic, or online.

Lesen Sie unten weiter

Was ist Chlamydien?

Was ist Chlamydien?

Chlamydia is a sexuell übertragbare Infektion (STI) caused by a germ (bacterium) called Chlamydia trachomatis. In women, chlamydial infection usually affects the neck of the womb (cervix) and the womb (uterus). In men, it usually affects the pipe through which urine is passed (the urethra) in the penis. Chlamydia also sometimes causes infection of the eye, throat and lungs.

Most people with chlamydia get the infection by having sex with an infected person. You can become infected with chlamydia if you come into contact with the semen or vaginal fluids of a person who has chlamydia.

Lesen Sie unten weiter

In 2019 in England, there were 229,411 new cases of chlamydia. Around 6 out of 10 of the reported cases were in young people aged 15-24 years Many of those infected have no symptoms - around 7 in 10 infected women and 5 in 10 infected men have no symptoms so they would not be aware they have the infection. You can be infected with chlamydia for months, even years, without realising it. The risk of infection increases with the number of changes of sexual partner. Wearing a condom during sex helps to protect you from chlamydia and other STIs.

Hinweis: you nicht catch chlamydia from hugging, kissing or from sharing cups or cutlery.

Symptoms in women

No symptoms occur in around 7 in 10 infected women. Also, you may not have any symptoms until several weeks (or even months) after coming into contact with chlamydia.

If symptoms do occur in women, they may include:

Symptoms in men

No symptoms occur in 5 in 10 infected men.

If symptoms do occur in men, they may include:

Lesen Sie unten weiter

Tests for females

The best test is a vaginal swab. A swab is a small ball of cotton wool on the end of a stick which is used to obtain mucus and cells to send to the laboratory for testing. It is inserted about 5 cm into your vagina and turned (rotated) gently for a few seconds. This test can be done by a health professional but it is also possible for you to do the test yourself. This is usually an option you are given if invited to have screening tests for chlamydia.

This is the most accurate test. There are two other possible tests. One is a swab taken from the neck of the womb (cervix) by a nurse or doctor. The other is a urine test. When testing urine for chlamydia you should provide a urine sample after not having passed urine for at least an hour. You catch the first part of the urine stream in the container.

Tests for males

For men the usual test is a urine test, collected in the same way as for women above. The other option is for a health professional to take a swab from the pipe through which urine is passed (the urethra) in the penis.

Gesponsert

Confidante Heim-STD-Test

Confidante ist schnell, einfach und diskret in der Anwendung, von der Anschaffung bis zu den Ergebnissen. Testen Sie auf 10 häufige sexuell übertragbare Infektionen, einschließlich solcher, die keine Symptome zeigen, um ein umfassendes Profil Ihrer sexuellen Gesundheit zu erhalten.

Bestellen Sie Ihren STI-Test für zu Hause

Weitere Tests

If you have had anal or oral sex then you may have a back passage (rectal) or throat swab taken.

If infection with chlamydia is confirmed, you will be advised to have tests for other STIs.

Hinweis: the cervical screening (cervical smear) test does nicht test for chlamydia.

It is important that treatment for chlamydia should be started without delay. In some people where chlamydia is strongly suspected, this may even mean starting treatment before test results are available. Prompt treatment reduces the risk of complications in the future.

A short course of an antibiotic medicine usually clears chlamydial infection. You should tell your doctor if you are (or may be) pregnant or are breast-feeding. This may affect the choice of antibiotic.

You should not have sex until you and your sexual partner have finished treatment (or for seven days after treatment with a single-dose antibiotic).

The most commonly used antibiotics are:

Other options are used if these are not suitable for you. Your doctor will advise you on other treatment options.

Yes. Also, any other sexual partners within the previous six months should also be tested for infection.

If your sexual partner is infected and not treated then chlamydia can be passed back to you again after you are treated.

There may be certain occasions when you may not want to contact partners from previous relationships. In these cases staff at the clinic can contact previous partners for you without disclosing your details. This is because it is important that anyone who is at risk of infection with chlamydia be both identified and treated.

If you are infected with chlamydia, it is essential that you take treatment even if you do not have any symptoms of chlamydial infection. Reasons for this include:

  • The infection may spread and cause serious complications (see below). This can be months or years after you are first infected.

  • You can still pass on the infection to your sexual partner(s) even if you do not have symptoms.

You do not usually need to have a test to check the treatment worked if you have taken an antibiotic medicine correctly. However, it is advisable to have another test for chlamydia in the following situations:

  • If you think you have had sex with a person with chlamydia.

  • If your symptoms do not improve after treatment.

  • If you had unprotected sex before you finished the treatment.

  • If you did not complete the course of treatment.

  • If you are pregnant. (If you are pregnant and have been treated for chlamydia, you should have another test three weeks later.)

Also in England, the national screening programme advises that if you are aged under 25 and have had a positive test for chlamydia, you should have a repeat test three months later. This is to check the infection has cleared completely and that you have not got it back again.

  • If left untreated, the infection may seriously affect the womb (uterus) and Fallopian tubes - this is called pelvic inflammatory disease (PID). 10-40 women in 100 with chlamydia develop PID. This may develop suddenly and cause a high temperature (fever) and pain. It can also develop slowly over months or years without causing symptoms (also known as silent PID). However, over time, scarring or damage to the Fallopian tubes may occur and can cause:

  • The risk of developing some complications of pregnancy, such as Fehlgeburten, Frühgeburt and stillbirth, is increased in pregnant women with untreated chlamydia.

  • If you have untreated chlamydia during childbirth, your baby may develop a chlamydial infection of their eye or lung during the birth.

  • Possibly reduced fertility in men.

  • Reaktive Arthritis is a rare complication which can occur both in men and in women. In this condition, you get painful swollen joints. It may also appear as combined symptoms of inflammation of the eye and of the pipe through which urine is passed (urethra). It may be due to the immune system 'over-reacting' to chlamydial infection in some cases.

The risk of complications is much reduced if chlamydial infection is treated early.

In England there is a National Chlamydia Screening Programme. This offers chlamydial screening for sexually active women and men aged under 25 years. In this age group, screening is undertaken yearly or each time these women and men have a new sexual partner. The aims of this programme are to detect chlamydia early so it can be treated promptly. This should reduce the risk of transmission and also reduce the risk of developing complications. You can find information about screening at your GP surgery or local pharmacy. It is also available through family planning clinics, genitourinary medicine (GUM) clinics or online.

In countries where there is not a screening programme, testing is still offered regularly to sexually active young people. You can request testing regularly if you are in this category. You can do this through your GP or by attending a GUM clinic. It may be available in other ways (for example, online) depending on the area in which you live.

Certain other groups of people are also recommended to undergo screening for chlamydia. For example:

  • If you have a partner with chlamydia.

  • If you have another STI.

  • If you are a semen or egg donor.

  • If you are having an abortion (termination of pregnancy).

  • If you have had two or more sexual partners in the past year.

Men will be asked to give a urine sample and women can either give a urine sample or take a swab. A swab is a small ball of cotton wool on the end of a stick, used to take a sample of mucus and cells for laboratory testing. Women can take the swab themselves from the lower vagina.

Häufig gestellte Fragen

Can I get chlamydia from sharing items like cups or from kissing?

No, you cannot catch chlamydia from general contact like hugging, kissing, or sharing cups or cutlery. It is primarily spread through sexual contact with an infected person.

What should I do if I think I might have chlamydia but don't have symptoms?

Even if you don't have symptoms, it's important to get tested if you think you might have been exposed to chlamydia. Many people, especially women (around 7 in 10), don't show any symptoms, but the infection can still cause serious health problems if left untreated and can be passed on to others. In England, there is a National Chlamydia Screening Programme for sexually active individuals under 25 years old. You can also request testing through your GP, local pharmacy, family planning clinics, or genitourinary medicine (GUM) clinics.

If I am pregnant and have chlamydia, will it affect my baby?

Yes, if chlamydia is left untreated during pregnancy, there's an increased risk of complications like miscarriage, premature birth, and stillbirth. Also, if you have untreated chlamydia during childbirth, your baby may contract a chlamydial infection in their eyes or lungs during delivery.

How long after getting chlamydia could serious complications develop?

Complications from chlamydia can develop months or even years after you are first infected. For example, pelvic inflammatory disease (PID) can cause problems like persistent pelvic pain, difficulty becoming pregnant, or an increased risk of ectopic pregnancy in the future.

How soon will I know if the treatment has worked?

Generally, you do not need a re-test to confirm the treatment worked if you took your antibiotic medicine correctly. However, a re-test is advisable in specific situations, such as if your symptoms don't improve, if you had unprotected sex before finishing treatment, if you didn't complete the course, or if you are pregnant. For those under 25 in England, a repeat test is advised three months later to ensure the infection has cleared and not returned.

Does a cervical smear test check for chlamydia?

No, a cervical screening (cervical smear) test does not check for chlamydia. If you are concerned about chlamydia, you would need a specific chlamydia test.

What is the typical age group most affected by chlamydia in the UK?

Chlamydia is most common in young people. In 2019 in England, around 6 out of 10 reported cases were in individuals aged 15-24 years. Around 3 to 7 in 100 sexually active young people in the UK are infected.

Weiterführende Literatur und Referenzen

Lesen Sie unten weiter

Über den AutorVollständige Biografie anzeigen

Autorenbild

Dr Hayley Willacy, FRCGP

Allgemeinmediziner, Medizinischer Autor

MBChB (1992), DRCOG, DFFP, MRCOG (Part 1) MRCGP (2007), DFSRH (2013), MSc - medical education (2020)

Dr. Hayley Willacy war eine NHS-Hausärztin, die in Nordwestengland arbeitete und 2022 nach 30 Jahren aus der klinischen Praxis ausschied. 

Über den RezensentenVollständige Biografie anzeigen

Autorenbild

Dr Krishna Vakharia, MRCGP

Chief Medical Officer für Gesundheit, Optum UK

MBChB, MRCGP(2013), BMedSci (hons), DFSRH, DRCOG, PGDipDerm (Distn)

Dr. Krishna Vakharia ist eine NHS-Hausärztin. Sie ist auch regelmäßige Prüferin für das postgraduale Diplom in Praktischer Dermatologie an der Cardiff University und zudem Chief Medical Officer für Gesundheit bei Optum UK.

Artikelverlauf

Die Informationen auf dieser Seite wurden von qualifizierten Klinikern verfasst und begutachtet.

Grippe-Berechtigungsprüfer

Fragen, teilen, verbinden.

Durchsuchen Sie Diskussionen, stellen Sie Fragen und teilen Sie Erfahrungen zu Hunderten von Gesundheitsthemen.

Symptom-Checker für Patienten

Fühlen Sie sich unwohl?

Bewerten Sie Ihre Symptome online kostenlos

Abonnieren Sie den Patienten-Newsletter

Ihre wöchentliche Dosis klarer, vertrauenswürdiger Gesundheitsberatung - geschrieben, um Ihnen zu helfen, sich informiert, selbstbewusst und in Kontrolle zu fühlen.

Bitte geben Sie eine gültige E-Mail-Adresse ein

Durch das Abonnieren akzeptieren Sie unsere Datenschutzrichtlinie. Sie können sich jederzeit abmelden. Wir verkaufen Ihre Daten niemals.