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Showing 1–24 of 119 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Chlamydia Clear all
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Partnership for Rapid Elimination of Trachoma

NCT00792922
View directory record Official record
Conditions
Trachoma
Interventions
Azithromycin
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
Up to 5 Years
Enrollment
128 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2014
U.S. locations
2
States / cities
San Francisco, California • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 17, 2017 · Synced Jul 21, 2026, 7:05 AM EDT
Terminated No phase listed Observational

Multi-center Evaluation of the VERSANT® CT/GC DNA 1.0 Assay (kPCR)in Detecting C. Trachomatis and N. Gonorrhoeae

NCT01167777
View directory record Official record
Conditions
Chlamydia, Gonorrhea
Interventions
Not listed
Lead sponsor
Siemens Healthcare Diagnostics Inc
Industry
Eligibility
18 Years to 99 Years
Enrollment
2,296 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
7
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 4 more
Source: ClinicalTrials.gov public record
Updated Nov 25, 2015 · Synced Jul 21, 2026, 7:05 AM EDT
Recruiting No phase listed Observational

Validation of Chlamydia Diagnostic Codes in TriNetX US EHR Data

NCT07094373
View directory record Official record
Conditions
Chlamydial Infections
Interventions
Not listed
Lead sponsor
Sanofi
Industry
Eligibility
14 Years to 44 Years
Enrollment
533,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Jul 21, 2026, 7:05 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 Jul 21, 2026, 7:05 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Detection of Chlamydia (CT) and Gonorrhea (NG)

NCT02055742
View directory record Official record
Conditions
Chlamydia, Gonorrhea
Interventions
illumigene CT and NG assays, illumipro-10
Device
Lead sponsor
Meridian Bioscience, Inc.
Industry
Eligibility
14 Years to 89 Years
Enrollment
700 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
3
States / cities
Aurora, Colorado • Fall River, Massachusetts • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 6, 2017 · Synced Jul 21, 2026, 7:05 AM EDT
Completed Phase 2 Interventional

Safety and Efficacy Study of Rifalazil for the Treatment of Chlamydia Trachomatis Infection in Women

NCT01631201
View directory record Official record
Conditions
Chlamydia Trachomatis Infection
Interventions
Rifalazil 25 milligram, Azithromycin 1 gram
Drug
Lead sponsor
ActivBiotics Pharma, LLC
Industry
Eligibility
19 Years and older · Female only
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
5
States / cities
Birmingham, Alabama • San Diego, California • Indianapolis, Indiana + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 28, 2013 · Synced Jul 21, 2026, 7:05 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Home Screening for Chlamydia Surveillance

NCT00177437
View directory record Official record
Conditions
Chlamydia Trachomatis, Gonorrhea
Interventions
home testing kit
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
15 Years to 29 Years · Female only
Enrollment
403 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2005
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 12, 2007 · Synced Jul 21, 2026, 7:05 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 Jul 21, 2026, 7:05 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effectiveness of Relationship Education for Reducing HIV Incidence Among Men Who Have Sex With Men

NCT05678556
View directory record Official record
Conditions
Hiv, Chlamydia, Gonorrhea
Interventions
all2GETHER
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
16 Years to 34 Years
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Jul 21, 2026, 7:05 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Seek, Test, and Treat Intervention to Reduce Chlamydia Trachomatis Disparities

NCT06428643
View directory record Official record
Conditions
Chlamydia, Gonorrhea, Hiv, Syphilis
Interventions
Chlamydia, gonorrhea, syphilis, and HIV screening
Other
Lead sponsor
Tulane University
Other
Eligibility
15 Years to 26 Years
Enrollment
2,322 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Jul 21, 2026, 7:05 AM EDT
Completed No phase listed Observational

Etiology of Community Acquired Pneumonia

NCT00471757
View directory record Official record
Conditions
Streptococcus Pneumonia, Haemophilus Influencae, Mycoplasma Pneumonia, Chlamydia Pneumonia
Interventions
Not listed
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2017
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 12, 2018 · Synced Jul 21, 2026, 7:05 AM EDT
Recruiting Not applicable Interventional

Point of Care STI Testing

NCT06844045
View directory record Official record
Conditions
Point of Care STI Testing
Interventions
Gonorrhea/chlamydia Point-of-Care Testing
Behavioral
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
16 Years to 24 Years
Enrollment
6,460 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Jul 21, 2026, 7:05 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Clinical Evaluation of the Aptima® Combo 2® Assay Using the Panther® System in Female Urine Samples

NCT02795975
View directory record Official record
Conditions
Chlamydia Trachomatis, Gonorrhea
Interventions
Not listed
Lead sponsor
Hologic, Inc.
Industry
Eligibility
14 Years and older · Female only
Enrollment
1,766 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
18
States / cities
Birmingham, Alabama • New Haven, Connecticut • Miami, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Mar 23, 2017 · Synced Jul 21, 2026, 7:05 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Risk Assessment of Long-Haul Truck Drivers

NCT00381992
View directory record Official record
Conditions
Gonorrhea, Chlamydia Infections, Hepatitis B, Hepatitis C, Diabetes Mellitus, Hypertension, Obesity, HIV Infections, Hyperlipidemia
Interventions
Not listed
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
21 Years and older
Enrollment
294 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2010
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 6, 2017 · Synced Jul 21, 2026, 7:05 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Multi-level Interventions for STD Prevention Among Adolescents

NCT00146406
View directory record Official record
Conditions
Chlamydia
Interventions
Project Connect
Behavioral
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
11 Years to 20 Years
Enrollment
36,502 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2012
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 10, 2012 · Synced Jul 21, 2026, 7:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Performance of Nucleic Acid Amplification Tests for the Detection of NG and CT

NCT02870101
View directory record Official record
Conditions
Neisseria Gonorrhoeae Infection, Chlamydia Trachomatis Infection, Sexually Transmitted Infections
Interventions
Nucleic acid amplification test 1 for NG and CT, Nucleic acid amplification test 2 for NG and CT, Nucleic acid amplification test 3 for NG and CT
Diagnostic Test
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
2,767 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
9
States / cities
Hollywood, California • Los Angeles, California • Denver, Colorado + 5 more
Source: ClinicalTrials.gov public record
Updated May 14, 2019 · Synced Jul 21, 2026, 7:05 AM EDT
Completed Phase 3 Interventional Results available

Bacterial Vaginosis Home Screening to Prevent STDs

NCT00667368
View directory record Official record
Conditions
Bacterial Vaginosis
Interventions
Metronidazole
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
15 Years to 25 Years · Female only
Enrollment
1,370 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
7
States / cities
Birmingham, Alabama • San Francisco, California • Baltimore, Maryland + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2020 · Synced Jul 21, 2026, 7:05 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 Jul 21, 2026, 7:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Check it: A New Approach to Controlling Chlamydia Transmission in Young People

NCT03098329
View directory record Official record
Conditions
Chlamydia Trachomatis Infection, Gonorrhea
Interventions
Ct/GC screening
Other
Lead sponsor
Tulane University
Other
Eligibility
15 Years to 26 Years · Male only
Enrollment
1,907 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Nov 22, 2021 · Synced Jul 21, 2026, 7:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

STI/HIV Intervention Behavioral Intervention Program

NCT04547413
View directory record Official record
Conditions
Sexually Transmitted Infections
Interventions
STI/HIV Intervention Behavioral Intervention Program
Behavioral
Lead sponsor
Madigan Army Medical Center
Federal
Eligibility
18 Years to 30 Years
Enrollment
155 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
2
States / cities
Fayetteville, North Carolina • Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Dec 19, 2024 · Synced Jul 21, 2026, 7:05 AM EDT
Recruiting Not applicable Interventional

RESTORE: Comparing Two Approaches to Repeat TT Surgery Performed by Integrated Eye Care Workers (IECWs)

NCT07322302
View directory record Official record
Conditions
Trachoma, Eye Diseases, Trichiasis
Interventions
B-RAP, BLTR
Procedure
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Jul 21, 2026, 7:05 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Phase 2B/3 Double-blinded Placebo-controlled

NCT03107377
View directory record Official record
Conditions
Chlamydia Trachomatis Infection
Interventions
EVO100, Placebo
Drug
Lead sponsor
Evofem Inc.
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
860 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
50
States / cities
Mobile, Alabama • Phoenix, Arizona • Tucson, Arizona + 40 more
Source: ClinicalTrials.gov public record
Updated Aug 11, 2020 · Synced Jul 21, 2026, 7:05 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 Jul 21, 2026, 7:05 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 Jul 21, 2026, 7:05 AM EDT