Chlamydia

Chlamydia is a common sexually transmitted disease (STD) caused by the bacterium, Chlamydia trachomatis, which can damage a woman's reproductive organs. Even though symptoms of chlamydia are usually mild or absent, serious complications that cause irreversible damage, including infertility, can occur "silently" before a woman ever recognizes a problem.

What is Chlamydia?

Chlamydia infection is a common sexually transmitted disease caused by the bacteria Chlamydia trachomatis, a strain of bacteria from the Chlamydiaceae family that usually affects the urogenital tract.

Chlamydia Infection Pathophysiology

Chlamydia Screening

Chlamydia Diagnosis

Chlamydia Treatment

Chlamydia Symptoms

What are Complications of Chlamydia?

Latest Chlamydia News and Research

New molecule offers hope for chlamydia treatment

Researchers at Umeå University, Sweden, and Michigan State University, USA, have discovered a type of molecule that can kill chlamydia bacteria but spare bacteria that are important for health.

8 May 2025

HIV testing and outreach falter as Trump funding cuts sweep the South

Storm clouds hung low above a community center in Jackson, where pastor Andre Devine invited people inside for lunch. Hoagies with smoked turkey and ham drew the crowd, but several people lingered for free preventive health care: tests for HIV and other diseases, flu shots, and blood pressure and glucose monitoring.

6 May 2025

Disparities identified in treatment of chlamydia and gonorrhea in primary care

Prompt treatment of chlamydia and gonorrhea following a confirmed diagnosis is essential to prevent complications and reduce transmission. Adherence to the Centers for Disease Control (CDC) treatment guidelines in primary care settings remains a concern.

24 Mar 2025

New STI impacts 1 in 3 women: Landmark study reveals men are the missing link

A landmark study reveals that bacterial vaginosis (BV), a condition affecting nearly a third of women worldwide and causing infertility, premature births and newborn deaths, is in fact a sexually transmitted infection (STI), paving the way for a revolution in how it is treated.

5 Mar 2025

Addressing the global challenge of bacterial STIs

According to the World Health Organization (WHO), hundreds of millions of new cases of bacterial sexually transmitted infections (STIs) are reported worldwide each year. Many infections go undiagnosed due to their often silent symptoms, contributing to transmission, disease and complications such as infertility and miscarriage.

14 Feb 2025

New study links cervicovaginal microbiome to increased risk of Chlamydia infections

The cervicovaginal microbiome's role in Chlamydia infections underscores the need for molecular classification to enhance prevention and treatment strategies.

17 Jan 2025

New research identifies key subtype of bacterial vaginosis that increases chlamydia risk

Women who develop bacterial vaginosis (BV) often later acquire chlamydia, a common and potentially serious sexually transmitted bacterial infection.

16 Jan 2025

Early results of doxy PEP rollout show mixed impact on STIs

As health care services begin offering doxycycline to prevent bacterial sexually transmitted infections (STIs), real-world evidence demonstrates that the postexposure strategy, called doxy PEP, is reducing the rate of syphilis and chlamydia, but has had little to no effect on gonorrhea and needs close monitoring for signals of antibiotic resistance.

6 Jan 2025

DoxyPEP reduces chlamydia and syphilis rates in routine care

A new study has found that rates of chlamydia and syphilis plummet among people prescribed doxycycline for sexually transmitted infection prevention in routine clinical care.

6 Jan 2025

Study links dating app use to increased risk of STIs among college students

In May, the WHO raised the alarm over the rise in incidence of sexually transmitted illnesses (STIs) in many regions of the world, currently running at more than a million new cases per day.

15 Nov 2024

WHO confirms elimination of trachoma in South Asia

The world moved closer to eliminating trachoma this month after the World Health Organization (WHO) confirmed India and Pakistan as being free of the disease, a leading cause of blindness.

16 Oct 2024

Researchers uncover mechanism of protein GBP1 in immune defense

The protein GBP1 is a vital component of our body's natural defence against pathogens. This substance fights against bacteria and parasites by enveloping them in a protein coat, but how the substance manages to do this has remained unknown until now.

12 Oct 2024

Doxycycline increases antimicrobial resistance in the gut without disrupting microbiome diversity

Doxycycline post-exposure prophylaxis increases tetracycline resistance genes in the gut, without significantly affecting microbiome diversity in men who have sex with men and transgender women.

7 Oct 2024

Study highlights benefits and risks of doxy-PEP for STI prevention

Taking a dose of the oral antibiotic doxycycline after a high-risk sexual encounter has dramatically reduced the incidence of sexually transmitted infections (STIs) in places where the strategy is being tried.

4 Oct 2024

WHO calls for action to support adolescent mental and sexual health

Increased investment is urgently needed to address evolving health risks and meet the mental and sexual and reproductive health needs for the nearly 1.3 billion adolescents (aged 10-19 years) globally, according to a new scientific publication released by the World Health Organization (WHO).

23 Sep 2024

She was accused of murder after losing her pregnancy. SC woman now tells her story.

Amari Marsh had just finished her junior year at South Carolina State University in May 2023 when she received a text message from a law enforcement officer.

23 Sep 2024

NIH-funded study compares eyelid surgeries for Trachomatous trichiasis

Trachomatous trichiasis, a potentially blinding condition where inward-turned eyelashes scratch the front of the eye, can successfully be treated by either of the two most common types of eyelid surgery, according to findings from a large comparison trial funded by the National Institutes of Health.

18 Sep 2024