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Showing 1–24 of 26 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Group A Streptococcal Infection Clear all
Completed Phase 3 Interventional

A Multicenter, Randomized, Double-Blind, Double-Dummy Comparative Trial of Azithromycin Sustained Release Versus 3-Day Azithromycin for the Treatment of Strep Throat in Adolescents and Adults

NCT00644293
View directory record Official record
Conditions
Pharyngitis, Tonsillitis
Interventions
azithromycin (Zithromax), placebo, azithromycin SR
Drug
Lead sponsor
Pfizer
Industry
Eligibility
13 Years and older
Enrollment
598 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
16
States / cities
Clearwater, Florida • Boise, Idaho • Meridian, Idaho + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 7, 2011 · Synced Jul 22, 2026, 4:56 AM EDT
Completed No phase listed Observational

Clinical Performance of the Checkable Medical At-Home Strep A Test

NCT05107362
View directory record Official record
Conditions
Streptococcus Pyogenes Infection, Pharyngitis, Respiratory Tract Infections
Interventions
untrained lay user performs investigational diagnostic test
Diagnostic Test
Lead sponsor
Checkable Medical Inc
Industry
Eligibility
5 Years and older
Enrollment
1,347 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
22
States / cities
Beverly Hills, California • Jacksonville, Florida • Miami, Florida + 18 more
Source: ClinicalTrials.gov public record
Updated Jul 11, 2023 · Synced Jul 22, 2026, 4:56 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Phase 1/2, Randomized, Placebo-controlled, Observer-blinded Trial To Evaluate The Safety, Tolerability, And Immunogenicity Of A Multivalent Group B Streptococcus Vaccine In Healthy Adults 18 To 49 Years Of Age

NCT03170609
View directory record Official record
Conditions
Group B Streptococcal Infections
Interventions
Multivalent group B streptococcus vaccine, Placebo
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 49 Years
Enrollment
365 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
4
States / cities
Stockbridge, Georgia • Bardstown, Kentucky • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 1, 2019 · Synced Jul 22, 2026, 4:56 AM EDT
Completed No phase listed Observational Results available

Comparative Effectiveness of Antibiotics for Respiratory Infections

NCT02297815
View directory record Official record
Conditions
Acute Otitis Media, Acute Sinusitis, Group A Streptococcal Pharyngitis
Interventions
Broad-spectrum antibiotics, Narrow-spectrum antibiotics
Drug
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
6 Months to 12 Years
Enrollment
2,472 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 7, 2019 · Synced Jul 22, 2026, 4:56 AM EDT
Suspended Not applicable Interventional

CandyCollect Strep Throat Testing

NCT05175196
View directory record Official record
Conditions
Group A Streptococcal Infection
Interventions
CandyCollect, Lollipop Swab
Diagnostic Test
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
5 Years to 17 Years
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Jul 22, 2026, 4:56 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Rapid Diagnostic Test for Detection of Group B Streptococcus in Pregnancy

NCT01445717
View directory record Official record
Conditions
Streptococcus Infection, Pregnancy
Interventions
Not listed
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
358 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 2, 2013 · Synced Jul 22, 2026, 4:56 AM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers

Study of the Safety and Immunogenicity of Catch-up Vaccination With a 21-valent Pneumococcal Conjugate Vaccine (PCV21) in Healthy Infants, Toddlers, Children, and Adolescents

NCT06838000
View directory record Official record
Conditions
Pneumococcal Infections
Interventions
PCV21, 20vPCV
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
7 Months to 17 Years
Enrollment
1,268 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
17
States / cities
Paramount, California • Doral, Florida • Hialeah, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Oct 5, 2025 · Synced Jul 22, 2026, 4:56 AM EDT
Completed No phase listed Observational

A Multi-Site Clinical Evaluation of the ARIES Group A Strep Assay in Symptomatic Patients

NCT03037957
View directory record Official record
Conditions
Pharyngitis Bacterial
Interventions
ARIES Group A Strep Assay
Device
Lead sponsor
Luminex Corporation
Industry
Eligibility
Not listed
Enrollment
704 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
5
States / cities
Los Angeles, California • Pensacola, Florida • Kansas City, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 6, 2017 · Synced Jul 22, 2026, 4:56 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of the Liquid Formulation of Group B Streptococcus Trivalent Vaccine and of the Lyophilized Formulation of Group B Streptococcus Trivalent Vaccine

NCT02270944
View directory record Official record
Conditions
Infections, Streptococcal, Streptococcal Infections
Interventions
GBS Vaccine
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 40 Years · Female only
Enrollment
1,053 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
5
States / cities
Redding, California • Lenexa, Kansas • Baltimore, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 4, 2019 · Synced Jul 22, 2026, 4:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Prospective Cohort Pilot Study of the Clinical and Molecular Epidemiology of Staphylococcus Aureus in Pregnant Women at the Time of Group B Streptococcal Screening in a Large Urban Medical Center in Chicago, IL USA

NCT00532324
View directory record Official record
Conditions
Staphylococcus Aureus
Interventions
CA-MRSA Decolonization
Other
Lead sponsor
Ann & Robert H Lurie Children's Hospital of Chicago
Other
Eligibility
Female only
Enrollment
107 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 27, 2025 · Synced Jul 22, 2026, 4:56 AM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

Lot-to-lot Consistency Study of a 21-valent Pneumococcal Conjugate Vaccine in Healthy Infants From 2 Months of Age

NCT07348692
View directory record Official record
Conditions
Pneumococcal Immunization, Healthy Volunteers
Interventions
PCV21 vaccine, 20vPCV licensed vaccine
Biological
Lead sponsor
Sanofi
Industry
Eligibility
42 Days to 89 Days
Enrollment
2,195 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
13
States / cities
Fayetteville, Arkansas • Huntington Park, California • Los Angeles, California + 9 more
Source: ClinicalTrials.gov public record
Updated May 21, 2026 · Synced Jul 22, 2026, 4:56 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Phase I/II Study to a Assess the GBS-06 Vaccine Manufactured by Inventprise, Inc., in Healthy, Non-Pregnant, Adult Women of Childbearing Age.

NCT06611371
View directory record Official record
Conditions
Group B Streptococcal Infections
Interventions
IVT GBS-06, Placebo
Biological
Lead sponsor
Inventprise Inc.
Industry
Eligibility
18 Years to 49 Years · Female only
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 17, 2025 · Synced Jul 22, 2026, 4:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Oral Probiotic Supplementation on Group B Strep (GBS) Rectovaginal Colonization in Pregnancy

NCT01479478
View directory record Official record
Conditions
Infection, Pregnancy
Interventions
Placebo, Probiotic dietary supplement
Drug · Dietary Supplement
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
251 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2017
U.S. locations
3
States / cities
Aptos, California • Santa Cruz, California • Stanford, California
Source: ClinicalTrials.gov public record
Updated Aug 19, 2018 · Synced Jul 22, 2026, 4:56 AM EDT
Not listed No phase listed Observational

Evaluation of the IND One Step Strep A Rapid Test vs. Culture

NCT01491776
View directory record Official record
Conditions
Strep Throat
Interventions
Not listed
Lead sponsor
IND Diagnostic Inc.
Industry
Eligibility
3 Years and older
Enrollment
315 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
3
States / cities
Bellevue, Nebraska • Franklin, Tennessee • Smyrna, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 7, 2012 · Synced Jul 22, 2026, 4:56 AM EDT
Terminated No phase listed Observational

Sofia Strep A FIA Field Study

NCT01494792
View directory record Official record
Conditions
Group A Streptococcus, Strep Throat
Interventions
In Vitro Diagnositc aid for diagnosis
Device
Lead sponsor
Quidel Corporation
Industry
Eligibility
3 Years and older
Enrollment
2,090 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
8
States / cities
Carlsbad, California • Panorama City, California • San Diego, California + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 9, 2012 · Synced Jul 22, 2026, 4:56 AM EDT
Completed Phase 3 Interventional

A Multicenter, Randomized, Double-Blind, Double-Dummy Study Of Azithromycin SR Versus Amoxicillin For The Treatment Of Strep Throat In Children

NCT00643149
View directory record Official record
Conditions
Tonsillitis
Interventions
amoxicillin, azithromycin SR
Drug
Lead sponsor
Pfizer
Industry
Eligibility
2 Years to 12 Years
Enrollment
693 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
33
States / cities
Hoover, Alabama • Pelham, Alabama • Fresno, California + 20 more
Source: ClinicalTrials.gov public record
Updated May 16, 2011 · Synced Jul 22, 2026, 4:56 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Rapid Strep Test Results

NCT04256694
View directory record Official record
Conditions
Strept Throat
Interventions
Rapid Antigen Test for Group A Streptococcus
Diagnostic Test
Lead sponsor
Kendall Healthcare Group, Ltd.
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Sep 2, 2020 · Synced Jul 22, 2026, 4:56 AM EDT
Completed Not applicable Interventional

Validation of the GenePOC Strep A, C/G Assay for Detecting Group A, C and G β-hemolytic Streptococcus From Throat Swabs.

NCT03422341
View directory record Official record
Conditions
Pharyngitis, Infective
Interventions
Comparison between GenePOC CR and Reference Method
Device
Lead sponsor
Meridian Bioscience, Inc.
Industry
Eligibility
25 Months and older
Enrollment
497 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
5
States / cities
Madera, California • Indianapolis, Indiana • Detroit, Michigan + 2 more
Source: ClinicalTrials.gov public record
Updated May 3, 2021 · Synced Jul 22, 2026, 4:56 AM EDT
Completed No phase listed Observational

Pilot Study of Strepic® Device for the Diagnosis of Group A Streptococcal Pharyngitis

NCT03777098
View directory record Official record
Conditions
Group A Streptococcal Infection
Interventions
Strepic® Device
Device
Lead sponsor
David A. Talan
Other
Eligibility
7 Years to 64 Years
Enrollment
426 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Sylmar, California
Source: ClinicalTrials.gov public record
Updated Apr 19, 2022 · Synced Jul 22, 2026, 4:56 AM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Rapid Detection of Group B Streptococcus (Strep)-Labor and Delivery Study

NCT00330642
View directory record Official record
Conditions
Streptococcal Infections
Interventions
Not listed
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2006
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 14, 2015 · Synced Jul 22, 2026, 4:56 AM EDT
Completed No phase listed Observational

Strep A FIA Field Study, Sofia

NCT02153008
View directory record Official record
Conditions
Group A Streptococcus
Interventions
Not listed
Lead sponsor
Quidel Corporation
Industry
Eligibility
3 Years and older
Enrollment
1,708 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
7
States / cities
Phoenix, Arizona • Boynton Beach, Florida • Delray Beach, Florida + 4 more
Source: ClinicalTrials.gov public record
Updated Aug 2, 2017 · Synced Jul 22, 2026, 4:56 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Prevention of GBS Colonization Via Immunity

NCT00128219
View directory record Official record
Conditions
Beta Haemolytic Streptococcal Infection
Interventions
GBS III-TT, Tetanus and diptheria toxoids vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years · Female only
Enrollment
667 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2008
U.S. locations
3
States / cities
Augusta, Georgia • Pittsburgh, Pennsylvania • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 26, 2015 · Synced Jul 22, 2026, 4:56 AM EDT
Not listed No phase listed Observational

Adjunctive Clindamycin Versus Linezolid for β-lactam Treated Patients With Invasive Group A Streptococcal Infections

NCT06126263
View directory record Official record
Conditions
Streptococcal Sepsis, Invasive Group A Beta-Haemolytic Streptococcal Disease, Necrotizing Soft Tissue Infection, Infection, Bloodstream, Infection, Bacterial, Streptococcal Toxic Shock Syndrome
Interventions
Linezolid, Clindamycin
Drug
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 100 Years
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 12, 2023 · Synced Jul 22, 2026, 4:56 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A TRIAL TO EVALUATE THE SAFETY, TOLERABILITY, AND IMMUNOGENICITY OF A BOOSTER DOSE OF A GROUP B STREPTOCOCCUS 6 VALENT POLYSACCHARIDE CONJUGATE VACCINE (GBS6) IN HEALTHY ADULTS

NCT04258995
View directory record Official record
Conditions
Group B Streptococcal Infections
Interventions
Group B streptoccous 6-valent polysaccharide conjugate vaccine (GBS6)
Biological
Lead sponsor
Pfizer
Industry
Eligibility
20 Years to 51 Years
Enrollment
151 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
4
States / cities
Stockbridge, Georgia • Bardstown, Kentucky • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Oct 12, 2021 · Synced Jul 22, 2026, 4:56 AM EDT