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Showing 1–24 of 603 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 2 Interventional Accepts healthy volunteers

Azithromycin for Meningococcal Carriage

NCT06618534
View directory record Official record
Conditions
Meningococcal Infections
Interventions
Azithromycin
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years to 25 Years
Enrollment
764 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Jul 21, 2026, 5:35 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Vouchers to Promote Tdap Vaccination

NCT01860378
View directory record Official record
Conditions
Whooping Cough
Interventions
Full price, $5 off
Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
18 Years and older
Enrollment
149 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 2, 2015 · Synced Jul 21, 2026, 5:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

NeuMoDx PrEDiCTiNG Study Evaluation Plan

NCT03970850
View directory record Official record
Conditions
Chlamydia Trachomatis Infection, Neisseria Gonorrheae Infection
Interventions
NeuMoDx CT/NG Assay, FDA-cleared NAATs
Diagnostic Test
Lead sponsor
NeuMoDx Molecular, Inc.
Industry
Eligibility
14 Years to 80 Years
Enrollment
4,017 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
15
States / cities
Birmingham, Alabama • North Miami, Florida • Orlando, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2020 · Synced Jul 21, 2026, 5:35 PM EDT
Completed Phase 4 Interventional

Animal-Assisted Visitation Program Chlorhexidine Trial

NCT04171817
View directory record Official record
Conditions
Methicillin-resistant Staphylococcus Aureus, Clostridium Difficile, Pseudomonas Aeruginosa
Interventions
Chlorhexidine
Drug
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
3 Years to 17 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
3
States / cities
Baltimore, Maryland • St Louis, Missouri • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Jul 21, 2026, 5:35 PM 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 Jul 21, 2026, 5:35 PM EDT
Completed Phase 1 Interventional

Salmonella Typhi Vi O-Acetyl Pectin-rEPA Conjugate Vaccine

NCT00277147
View directory record Official record
Conditions
Typhoid Fever
Interventions
BB IND 6989
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 45 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 21, 2026, 5:35 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Novel Diagnostics for Early Lyme Disease

NCT03963635
View directory record Official record
Conditions
Lyme Disease
Interventions
MicroB-plex Lyme Immunoassay
Diagnostic Test
Lead sponsor
MicroB-plex, Inc.
Industry
Eligibility
21 Years to 80 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 12, 2019 · Synced Jul 21, 2026, 5:35 PM EDT
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Human Immune Response to Ixodes Scapularis Tick Bites

NCT05036707
View directory record Official record
Conditions
Tick-borne Diseases, Tick Resistance, Lyme Disease
Interventions
Xenodiagnosis Ticks, skin biopsy, blood draw
Device · Procedure
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 99 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Jul 21, 2026, 5:35 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Reversal of Lipid-Induced Insulin Resistance

NCT02193295
View directory record Official record
Conditions
Insulin Resistance, NAFLD
Interventions
Caloric Restriction
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 90 Years
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2034
U.S. locations
2
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Jul 21, 2026, 5:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Internet-Based Sexual Health Education for Middle School Native American Youth

NCT01303575
View directory record Official record
Conditions
Sexually Transmitted Diseases, Pregnancy, HIV Infections
Interventions
HIV, STI and Pregnancy Prevention Curriculum, Control Curricula
Behavioral
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
12 Years to 14 Years
Enrollment
574 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
4
States / cities
Anchorage, Alaska • Phoenix, Arizona • Portland, Oregon + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2015 · Synced Jul 21, 2026, 5:35 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Validation Study for Detecting Chlamydia and Gonorrhea in Rectal Samples

NCT00827697
View directory record Official record
Conditions
Gonorrhea, Chlamydia
Interventions
Gen-Probe APTIMA Combo2 (AC2)
Other
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
399 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 16, 2016 · Synced Jul 21, 2026, 5:35 PM EDT
Completed No phase listed Observational

Multi-Drug Resistant Organism (MDRO): Study of Highly Resistant Escherichia Coli

NCT04574596
View directory record Official record
Conditions
E Coli Infection
Interventions
no Intervention
Other
Lead sponsor
Duke University
Other
Eligibility
Not listed
Enrollment
300 participants
Timeline
2020 – 2021
U.S. locations
13
States / cities
Torrance, California • Aurora, Colorado • Atlanta, Georgia + 10 more
Source: ClinicalTrials.gov public record
Updated Jul 26, 2021 · Synced Jul 21, 2026, 5:35 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Prospective Collection of Female Specimens for Testing With Gen-Probe APTIMA (Registered Trademark) Assays

NCT01728103
View directory record Official record
Conditions
Chlamydia Infections, Gonorrhea, Trichomonas Infections
Interventions
APTIMA® Trichomonas vaginalis & APTIMA® COMBO 2® Assays
Device
Lead sponsor
Gen-Probe, Incorporated
Industry
Eligibility
16 Years and older · Female only
Enrollment
1,336 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2013
U.S. locations
14
States / cities
Birmingham, Alabama • San Diego, California • North Miami, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Aug 15, 2017 · Synced Jul 21, 2026, 5:35 PM EDT
Completed Phase 2 Interventional Results available

Efficacy and Safety of Ceftaroline Versus Linezolid in Subjects With Complicated Skin and Skin Structure Infections

NCT00633152
View directory record Official record
Conditions
Bacterial Infection
Interventions
ceftaroline, linezolid, Aztreonam
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
13
States / cities
Buena Park, California • Long Beach, California • Los Angeles, California + 10 more
Source: ClinicalTrials.gov public record
Updated Mar 13, 2017 · Synced Jul 21, 2026, 5:35 PM 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, 5:35 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Persistence of Antibodies in Children Aged 7 to 15 Years Who Previously Received One Dose of Menactra® or Menomune®

NCT00258856
View directory record Official record
Conditions
Meningitis, Meningococcal Infection
Interventions
Polysaccharide Diphtheria Conjugate Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
7 Years to 15 Years
Enrollment
234 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
11
States / cities
Jonesboro, Arkansas • Little Rock, Arkansas • Marietta, Georgia + 8 more
Source: ClinicalTrials.gov public record
Updated Feb 13, 2014 · Synced Jul 21, 2026, 5:35 PM 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 Jul 21, 2026, 5:35 PM 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, 5:35 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

A Comprehensive Clinical, Microbiological and Immunological Assessment of Patients With Suspected Post Treatment Lyme Disease Syndrome and Selected Control Populations

NCT00001539
View directory record Official record
Conditions
Lyme Disease
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years to 99 Years
Enrollment
700 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 1996
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 21, 2026, 5:35 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

This Study Evaluates the ALPCO Syphilis-T and Syphilis-NT CLIA Kits for Detecting Syphilis Antibodies in Serum and Plasma. Samples From At-risk, HIV-positive, Pregnant, and Healthy Individuals Will Assess Assay Performance Versus Established Comparator Tests.

NCT07089836
View directory record Official record
Conditions
Treponema Pallidum, Treponema Pallidum Infection, Syphilis Infection, Serum, Plasma, Blooddraw, Sexually Transmitted Infection (STI)
Interventions
ALPCO Syphilis-T, ALPCO Syphilis-NT CLIA Kits
Device
Lead sponsor
American Laboratory Products Company
Industry
Eligibility
13 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
6
States / cities
Lancaster, California • Los Angeles, California • North Miami, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 10, 2026 · Synced Jul 21, 2026, 5:35 PM EDT
Completed No phase listed Observational

Community - Associated Extended-spectrum Beta-lactamases (ESBL)

NCT00363220
View directory record Official record
Conditions
Infection, E Coli Infections, Klebsiella Infections, Proteus Infections
Interventions
Not listed
Lead sponsor
University of Pittsburgh
Other
Eligibility
Not listed
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2015
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 16, 2015 · Synced Jul 21, 2026, 5:35 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Study to Evaluate the Safety and Immunogenicity of mRNA-1975 and mRNA-1982 Against Lyme Disease in Participants 18 Through 70 Years of Age

NCT05975099
View directory record Official record
Conditions
Lyme Disease
Interventions
mRNA-1975, mRNA-1982, Placebo
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
807 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
20
States / cities
Milford, Connecticut • Stamford, Connecticut • Waterbury, Connecticut + 17 more
Source: ClinicalTrials.gov public record
Updated Aug 21, 2025 · Synced Jul 21, 2026, 5:35 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immunogenicity of Two Live, Attenuated Oral Shigella Sonnei Vaccines: WRSs2 and WRSs3

NCT01336699
View directory record Official record
Conditions
Shigella Infection
Interventions
Placebo, WRSs2, WRSs3
Other · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 27, 2019 · Synced Jul 21, 2026, 5:35 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Biomarker Study of Previously Treated Lyme Disease Volunteers in Comparison to Healthy Volunteers

NCT04835792
View directory record Official record
Conditions
Lyme Disease
Interventions
Stool and blood collection
Other
Lead sponsor
FlightPath Biosciences, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Berkeley, California
Source: ClinicalTrials.gov public record
Updated Apr 7, 2021 · Synced Jul 21, 2026, 5:35 PM EDT