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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: CHLAMYDIA INFECTIONS Clear all
Completed No phase listed Observational

Sexually Transmitted Infections Among African American Women Who Have Sex With Women

NCT01043081
View directory record Official record
Conditions
Sexually Transmitted Infections, HIV Infections
Interventions
Not listed
Lead sponsor
University of Mississippi Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated May 10, 2016 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Phase 3 Interventional Results available

Combination Antibiotic Treatment for Reactive Arthritis Caused by Chlamydia Bacteria

NCT00351273
View directory record Official record
Conditions
Arthritis, Reactive, Reiter Disease
Interventions
Doxycycline and Rifampin, Azithromycin and Rifampin, Placebo
Drug
Lead sponsor
University of South Florida
Other
Eligibility
18 Years to 70 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
2
States / cities
Tampa, Florida • New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Nov 12, 2018 · Synced Sep 25, 2026, 6:47 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluation of NAATs for Detection of C. Trachomatis and N. Gonorrhoeae From Pharynx, Rectum, Glans & Urethra of MSM

NCT00187902
View directory record Official record
Conditions
Sexually Transmitted Diseases, Chlamydia, Gonorrhea
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
Male only
Enrollment
907 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 13, 2011 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Evaluation of Doxycycline Post-exposure Prophylaxis to Reduce Sexually Transmitted Infections in PrEP Users and HIV-infected Men Who Have Sex With Men

NCT03980223
View directory record Official record
Conditions
Gonorrhea, Chlamydia, Syphilis
Interventions
Doxycycline Hyclate Delayed-Release 200 mg
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older · Male only
Enrollment
641 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
3
States / cities
San Francisco, California • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 11, 2024 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Adolescent Sexually Transmitted Infection Screening in the Emergency Department

NCT03715335
View directory record Official record
Conditions
Gonorrhea, Chlamydia
Interventions
Targeted STI Screening, Universally Offered STI Screening
Other
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
15 Years to 21 Years
Enrollment
98,413 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
5
States / cities
Aurora, Colorado • Columbus, Ohio • Philadelphia, Pennsylvania + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2025 · Synced Sep 25, 2026, 6:47 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Project AWARE: Using the Emergency Department (ED) to Prevent Sexually Transmitted Infections (STIs) in Youth

NCT01195220
View directory record Official record
Conditions
Chlamydia, Gonorrhea, HIV
Interventions
HIV testing, STI/HIV-T, STI/HIV-Plus
Behavioral
Lead sponsor
North Bronx Healthcare Network
Other
Eligibility
14 Years to 21 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated May 7, 2015 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Not applicable Interventional Results available

A Study of the Cobas® Liat CT/NG/MG Test Versus Current Standard Practice for Managing Participants at Increased Risk of Sexually Transmitted Infections

NCT06369220
View directory record Official record
Conditions
Chlamydia Trachomatis Infection, Neisseria Gonorrhoeae Infection, Mycoplasma Genitalium Infection
Interventions
cobas® liat CT/NG/MG nucleic acid test, Standard of Care (SOC): Clinician's Standard Practice
Diagnostic Test · Other
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
331 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
4
States / cities
San Francisco, California • Hamilton Square, New Jersey • Perth Amboy, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Phase 1Phase 2 Interventional

The Participant Agreement for Contact Tracing (PACT) Study: Enhancing Partner Notification Services.

NCT00207493
View directory record Official record
Conditions
Chlamydia Infection, Contact Tracing
Interventions
Kit enhancement to referral, patient referral versus contract referral
Behavioral · Procedure
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
15 Years and older
Enrollment
494 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 26, 2012 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Not applicable Interventional

Self Sampling for Rapid Turnaround Testing in the Emergency Department

NCT03676816
View directory record Official record
Conditions
Chlamydia Trachomatis, Neisseria Gonorrhoeae
Interventions
vaginal self sampling, provider-performed endocervical sampling
Procedure
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older · Female only
Enrollment
533 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Aug 4, 2021 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Not applicable Interventional

Randomized Trial of Home Versus Clinic-based Screening for Sexually Transmitted Infections

NCT01184157
View directory record Official record
Conditions
Chlamydia, Gonorrhea
Interventions
Home screening, Clinic screening
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
14 Years to 45 Years · Female only
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 17, 2010 · Synced Sep 25, 2026, 6:47 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Self-Obtained Vaginal Swabs for Chlamydia and Gonorrhea Testing

NCT01849653
View directory record Official record
Conditions
Chlamydial Infection, Gonococcal Infection
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
16 Years to 75 Years · Female only
Enrollment
3,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 2, 2016 · Synced Sep 25, 2026, 6:47 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Use of a Rapid Test for Gonorrhea & Chlamydia for Women Presenting With Possible Sexually Transmitted Infections

NCT03098394
View directory record Official record
Conditions
Sexually Transmitted Infection, Gonorrhea Female, Chlamydia Females
Interventions
Cepheid Xpert CT/NG Rapid Turnaround Test, Polymerase chain reaction (PCR)
Device
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 30, 2023 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Phase 3 Interventional Results available

Treatment Failure of Chlamydial Infection in Males and Females in Youth Correctional Facilities

NCT00980148
View directory record Official record
Conditions
Chlamydial Infection
Interventions
Azithromycin, Doxycycline
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
12 Years to 21 Years
Enrollment
567 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
2
States / cities
Birmingham, Alabama • Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 4, 2026 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Phase 3 Interventional Results available

Comparative Study of Ceftaroline vs. Ceftriaxone in Adults With Community-Acquired Pneumonia

NCT00509106
View directory record Official record
Conditions
Bacterial Pneumonia
Interventions
Ceftaroline fosamil for Injection, Ceftriaxone, Placebo
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years and older
Enrollment
622 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 13, 2017 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Primary Care Clinical Excellence Incentive Study

NCT04237883
View directory record Official record
Conditions
Behavioral Economics, Primary Health Care, Health Maintenance, Diabetes, Colorectal Cancer Screening, Cervical Cancer Screening, Chlamydia Screening, HPV Screening
Interventions
Standard communication email, Social comparison Intervention, Leadership Training
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
225 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Brentwood, California
Source: ClinicalTrials.gov public record
Updated Jan 25, 2021 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

HIV and STD Prevention for High-Risk, Inner-City, African American Youth

NCT00353405
View directory record Official record
Conditions
HIV Infections, Sexually Transmitted Diseases
Interventions
Social Skills Training, Mass media, Control
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
14 Years to 17 Years
Enrollment
1,650 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
4
States / cities
Atlanta, Georgia • Syracuse, New York • Providence, Rhode Island + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 18, 2012 · Synced Sep 25, 2026, 6:47 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Prospective Collection of Female and Male Specimens for PANTHER® System Testing

NCT01638637
View directory record Official record
Conditions
Chlamydia Infections, Gonorrhea
Interventions
APTIMA Assays; PANTHER System
Device
Lead sponsor
Gen-Probe, Incorporated
Industry
Eligibility
16 Years and older
Enrollment
1,492 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
16
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 13 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2013 · Synced Sep 25, 2026, 6:47 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Emergency Department, Rapid Assessment for Sexually Transmitted Infection

NCT02386514
View directory record Official record
Conditions
Infection
Interventions
Not listed
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years and older
Enrollment
1,200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 3, 2017 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Using the Healthcare Visit to Improve Contraceptive Use

NCT00140296
View directory record Official record
Conditions
Pregnancy, Chlamydia
Interventions
Contraceptive counseling
Behavioral
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
16 Years to 44 Years · Female only
Enrollment
747 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2005
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 31, 2005 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Phase 4 Interventional Results available

Trial of Azithromycin vs. Doxycycline for the Treatment of Rectal Chlamydia in MSM

NCT03608774
View directory record Official record
Conditions
Anal Chlamydia Infection
Interventions
Azithromycin, Doxycycline, Placebo
Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 99 Years · Male only
Enrollment
177 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
2
States / cities
Boston, Massachusetts • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 6, 2021 · Synced Sep 25, 2026, 6:47 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Assessing Acceptability and Feasibiity of STI Self-swab Testing, to be Offered at the Time of Telemed Medication Abortion Provision

NCT06951438
View directory record Official record
Conditions
Sexually Transmitted Disease (STD), Gonorrhea, Chlamydia, Trichomonas Infection
Interventions
Self-swab collection PCR test for chlamydia, gonorrhea, trichomonas
Diagnostic Test
Lead sponsor
Queen's Medical Center
Other
Eligibility
14 Years and older · Female only
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Honolulu, Hawaii
Source: ClinicalTrials.gov public record
Updated Jun 25, 2025 · Synced Sep 25, 2026, 6:47 AM EDT
Not listed Phase 2 Interventional

RESTORE-IT-Study of Rifalazil in Chlamydia Pneumoniae Seropositive Patients With a History of Atherosclerotic Disease

NCT00385385
View directory record Official record
Conditions
Coronary Artery Disease, Cerebrovascular Disease, Peripheral Vascular Disease
Interventions
Rifalazil
Drug
Lead sponsor
ActivBiotics
Industry
Eligibility
50 Years to 85 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
5
States / cities
Lansing, Michigan • Roslyn, New York • Stony Brook, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 29, 2007 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Not applicable Interventional Results available

Modified Instrumentation for Surgery to Correct Trichiasis

NCT00886015
View directory record Official record
Conditions
Trachoma
Interventions
TT Clamp, Standard BLTR Technique
Device · Procedure
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
1,927 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 18, 2017 · Synced Sep 25, 2026, 6:47 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Impact of Water and Health Education Programs on Trachoma and Ocular C. Trachomatis in Niger

NCT00348478
View directory record Official record
Conditions
Trachoma
Interventions
water and health education program to improve hygiene
Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
6 Months to 65 Months
Enrollment
720 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 27, 2011 · Synced Sep 25, 2026, 6:47 AM EDT