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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Diphtheria Clear all
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of DTap-IPV Compared to DAPTACEL® and IPOL® as the 5th Dose in Children 4 to 6 Years of Age

NCT01346293
View directory record Official record
Conditions
Tetanus, Diphtheria, Pertussis, Measles, Polio
Interventions
Diphtheria and Tetanus Toxoids and Acellular Pertussis + Measles, Mumps, Rubella + Varicella Virus, Diphtheria and Tetanus Toxoids and Acellular Pertussis + Poliovirus + MMR + Varicella Virus
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
4 Years to 6 Years
Enrollment
3,372 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
71
States / cities
Birmingham, Alabama • Pinson, Alabama • Trussville, Alabama + 60 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2015 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of the Safety of Menactra® Vaccine When Administered With Other Pediatric Vaccines to Healthy Toddlers

NCT00483574
View directory record Official record
Conditions
Meningococcal Meningitis, Measles, Mumps, Rubella, Varicella
Interventions
Menactra®: Meningococcal Polysaccharide Diphtheria Toxoid Conjugate, Measles-mumps-rubella-varicella vaccine, Routine paediatric vaccine - Pneumococcal conjugate (PCV), Routine paediatric vaccine - Hepatitis A
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
9 Months to 12 Months
Enrollment
1,378 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
78
States / cities
Birmingham, Alabama • Dothan, Alabama • Pinson, Alabama + 68 more
Source: ClinicalTrials.gov public record
Updated May 15, 2016 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Tdap Vaccine Compared to DTaP Vaccine in Children 4 to 6 Years of Age

NCT00467519
View directory record Official record
Conditions
Tetanus, Diphtheria, Pertussis
Interventions
Tdap (Tetanus Toxoid Reduced Diphtheria Toxoid/Acellular Pertussis), DTaP (Diphtheria & Tetanus Toxoids & Acellular Pertussis Adsorbed)
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
4 Years to 6 Years
Enrollment
1,045 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
42
States / cities
Birmingham, Alabama • Fayetteville, Arkansas • Jonesboro, Arkansas + 34 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2014 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Immunogenicity and Safety of GlaxoSmithKline (GSK) Biologicals' Boostrix™ Vaccine in Previously Boosted Young Adults

NCT01738477
View directory record Official record
Conditions
Tetanus, Acellular Pertussis, Diphtheria
Interventions
Boostrix
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
19 Years to 30 Years
Enrollment
165 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
20
States / cities
Mesa, Arizona • Tempe, Arizona • Jonesboro, Arkansas + 16 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2018 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Study of a Tetravalent Meningococcal Diphtheria Toxoid Conjugate Vaccine in Toddlers 9 to 18 Months of Age

NCT00643916
View directory record Official record
Conditions
Meningitis, Meningococcal Infection
Interventions
Meningococcal Polysaccharide Diphtheria Protein Conjugate (Menactra®), A/C/Y/W-135, Meningococcal Polysaccharide Vaccine (Menomune®)
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
9 Months to 5 Years
Enrollment
378 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
14
States / cities
Little Rock, Arkansas • Norwich, Connecticut • Atlanta, Georgia + 11 more
Source: ClinicalTrials.gov public record
Updated Feb 13, 2014 · Synced Sep 25, 2026, 7:14 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Comparing the Incidence of Preeclampsia Between Pregnant Women Receiving Tdap Vaccinations at Week 28 or at Week 36

NCT04424693
View directory record Official record
Conditions
Pre-Eclampsia, Diphtheria, Tetanus and Pertussis Vaccine Reaction
Interventions
Tdap Vaccine Administration
Drug
Lead sponsor
Institute of Arthritis Research
Other
Eligibility
18 Years to 42 Years · Female only
Enrollment
1,600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Idaho Falls, Idaho
Source: ClinicalTrials.gov public record
Updated Jun 15, 2020 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Study of a Pneumococcal Conjugate Vaccine When Administered Concomitantly With Routine Pediatric Vaccines in Healthy Toddlers and Infants

NCT04398706
View directory record Official record
Conditions
Pneumococcal Immunisation, Diphtheria Immunisation, Tetanus Immunisation, Pertussis Immunisation, Hepatitis B Immunisation, Haemophilus Influenzae Type b Immunisation, Polio Immunisation, Measles Immunisation, Rubella Immunisation, Varicella Immunisation, Mumps Immunisation
Interventions
Pneumococcal Conjugate Vaccine formulation 1, Pneumococcal Conjugate Vaccine formulation 2, Pneumococcal Conjugate Vaccine formulation 3, Varicella Virus Vaccine Live, Measles, Mumps, and Rubella Virus Vaccine Live, Pneumococcal 13-valent Conjugate Vaccine [Diphtheria CRM197 Protein], Diphtheria and Tetanus Toxoids and Acellular Pertussis Adsorbed, Inactivated Poliovirus and Haemophilus b Conjugate (Tetanus Toxoid Conjugate), Rotavirus Vaccine, Live, Oral, Pentavalent, Hepatitis B Vaccine* [Recombinant] *as applicable
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
42 Days to 15 Months
Enrollment
852 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
49
States / cities
Jonesboro, Arkansas • Bellflower, California • Huntington Park, California + 41 more
Source: ClinicalTrials.gov public record
Updated Sep 7, 2025 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety Study of Group A, C, Y & W-135 Meningococcal Polysaccharide Diphtheria Toxoid Conjugate Vaccine for Meningitis

NCT01482052
View directory record Official record
Conditions
Meningococcal Meningitis, Meningococcal Infections
Interventions
meningococcal meningitis conjugate vaccine, quadrivalent
Biological
Lead sponsor
JN-International Medical Corporation
Industry
Eligibility
18 Years to 50 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Hanford, California
Source: ClinicalTrials.gov public record
Updated Jan 13, 2013 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Trial to Evaluate the Safety and Immunogenicity of ADACEL® Vaccine in Persons 65 Years of Age and Older

NCT00457249
View directory record Official record
Conditions
Pertussis, Tetanus, Diphtheria
Interventions
ADACEL®: Tetanus, Reduced Diphtheria and Acellular Pertussis Adsorbed, DECAVAC®: Tetanus and Diphtheria Toxoids Adsorbed
Biological
Lead sponsor
Sanofi
Industry
Eligibility
65 Years and older
Enrollment
1,564 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
19
States / cities
Chandler, Arizona • Phoenix, Arizona • Cypress, California + 15 more
Source: ClinicalTrials.gov public record
Updated Oct 18, 2012 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Canadian Manufactured Tetanus and Diphtheria Toxoids Adsorbed (Td) Vaccine Compared With U.S. Manufactured Td

NCT00601835
View directory record Official record
Conditions
Diphtheria, Tetanus
Interventions
Tetanus and Diphtheria Toxoids Adsorbed (Td) Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
11 Years to 60 Years
Enrollment
3,651 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2005
U.S. locations
2
States / cities
Oakland, California • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 13, 2016 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study to Determine the Immunogenicity and Safety of GlaxoSmithKline (GSK) Biologicals; Infanrix Hexa at 2, 4 and 6 Months of Age in Healthy Infants

NCT02096263
View directory record Official record
Conditions
Poliomyelitis, Diphtheria, Haemophilus Influenzae Type b, Tetanus, Acellular Pertussis, Hepatitis B
Interventions
Infanrix hexa, Pediarix, ActHIB, Pentacel, Engerix-B, Infanrix, Hiberix, Prevnar13, Rotarix
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
6 Weeks to 12 Weeks
Enrollment
585 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
43
States / cities
Tucson, Arizona • Fayetteville, Arkansas • Anaheim, California + 38 more
Source: ClinicalTrials.gov public record
Updated Nov 26, 2019 · Synced Sep 25, 2026, 7:14 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Persistence of Protective Antibody Titers 12-24 Months After NmVac4-A/C/Y/W-135-DT Vaccination: Follow Up Study

NCT02500511
View directory record Official record
Conditions
Meningococcal Meningitis, Meningococcal Infections
Interventions
NmVac4-A/C/Y/W-135-DT™
Biological
Lead sponsor
JN-International Medical Corporation
Industry
Eligibility
18 Years to 55 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Towson, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 11, 2016 · Synced Sep 25, 2026, 7:14 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Pilot Study Freeze and Transport Immune Cells

NCT00138268
View directory record Official record
Conditions
Diphtheria, Hepatitis B, Pertussis, Poliomyelitis, Tetanus
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older · Female only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2005
U.S. locations
1
States / cities
Torrance, California
Source: ClinicalTrials.gov public record
Updated Aug 26, 2010 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Immunogenicity and Safety of Havrix™ Co-Administered With a Diphtheria, Tetanus and Pertussis and a Haemophilus b Vaccine in Children Aged 15 Months

NCT00197236
View directory record Official record
Conditions
Hepatitis A
Interventions
Havrix™, Infanrix™, ActHIB™
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Months to 13 Months
Enrollment
468 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2007
U.S. locations
22
States / cities
Phoenix, Arizona • Oakland, California • San Ramon, California + 18 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2018 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Immune Response and Safety Comparison of 3 Lots of GSK Biologicals' DTaP-IPV Candidate Vaccine to DTaP + IPV Vaccines

NCT00148941
View directory record Official record
Conditions
Tetanus, Acellular Pertussis, Diphtheria
Interventions
SB213503 lot 1, SB213503 lot 2, SB213503 lot 3, Infanrix, IPOL, M-M-R II
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
4 Years to 6 Years
Enrollment
4,209 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
24
States / cities
Little Rock, Arkansas • Antioch, California • Daly City, California + 20 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 2 Interventional Results available

Vaccine Therapy for the Treatment of Newly Diagnosed Glioblastoma Multiforme

NCT02465268
View directory record Official record
Conditions
Glioblastoma Multiforme, Glioblastoma, Malignant Glioma, Astrocytoma, Grade IV, GBM
Interventions
pp65-shLAMP DC with GM-CSF, unpulsed PBMC and saline, Td, Saline, pp65-flLAMP DC with GM-CSF
Biological · Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
175 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
3
States / cities
Gainesville, Florida • Orlando, Florida • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 13, 2025 · Synced Sep 25, 2026, 7:14 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Surveillance Program to Determine Product Specific Rates of Invasive Hib Disease

NCT00855855
View directory record Official record
Conditions
Haemophilus Infections, Diphtheria, Tetanus, Polio, Pertussis
Interventions
DTaP-IPV/Hib
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
Up to 59 Months
Enrollment
20,830 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2014
U.S. locations
59
States / cities
Albany, California • Martinez, California • San Francisco, California + 56 more
Source: ClinicalTrials.gov public record
Updated Apr 24, 2022 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study of DAPTACEL® Administered as a 5th Dose in 4 to 6-Year-Old Children Previously Immunized With PENTACEL™

NCT00802867
View directory record Official record
Conditions
Diphtheria, Tetanus, Pertussis, Polio, Haemophilus Infection
Interventions
Diphtheria and Tetanus Toxoids and Acellular Pertussis (DAPTACEL®)
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
4 Years to 6 Years
Enrollment
989 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2005
U.S. locations
19
States / cities
Jonesboro, Arkansas • Little Rock, Arkansas • Oakland, California + 16 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2016 · Synced Sep 25, 2026, 7:14 AM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Assessing Interventions to Increase Tdap Acceptance for Non-birthing Partners in Pregnancy

NCT06135636
View directory record Official record
Conditions
Non-birthing Partner Vaccination in Pregnancy, Tdap - Tetanus, Diphtheria and Acellular Pertussis Vaccination, Vaccine Exposure During Pregnancy
Interventions
Education, Vaccine administration
Behavioral · Biological
Lead sponsor
Women and Infants Hospital of Rhode Island
Other
Eligibility
19 Years to 50 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Not applicable Interventional

Effect of Interleukin-2 on HIV Treatment Interruption

NCT00015704
View directory record Official record
Conditions
HIV Infections
Interventions
Aldesleukin
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2004
U.S. locations
17
States / cities
Los Angeles, California • Palo Alto, California • San Jose, California + 10 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity in Adults of Revaccination With Adacel® Vaccine 10 Years After a Previous Dose

NCT01439165
View directory record Official record
Conditions
Tetanus, Diphtheria, Pertussis, Whooping Cough
Interventions
Tetanus Toxoid, Diphtheria Toxoid and Pertussis Vaccine, Tetanus and Diphtheria Toxoids Adsorbed For Adult Use
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years to 64 Years
Enrollment
1,330 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2017
U.S. locations
31
States / cities
Huntsville, Alabama • Jonesboro, Arkansas • Little Rock, Arkansas + 28 more
Source: ClinicalTrials.gov public record
Updated Apr 27, 2022 · Synced Sep 25, 2026, 7:14 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

36-Month Post-marketing Surveillance and Analysis of Menactra Vaccine in 2-10 Year Olds

NCT00728260
View directory record Official record
Conditions
Meningitis, Meningococcal Disease
Interventions
None administered in this study
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
Not listed
Enrollment
1,421 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2013
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Feb 11, 2015 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Not applicable Interventional

Pneumococcal Vaccine and Routine Pediatric Immunizations in HIV-Infected Children Receiving Anti-HIV Drugs

NCT00013871
View directory record Official record
Conditions
HIV Infections, Hepatitis B, Measles, Pneumococcal Infections, Pertussis
Interventions
Diphtheria & Tetanus Toxoids & Acellular Pertussis Vaccine Adsorbed, Measles-Mumps-Rubella Vaccine (Live), Pneumococcal Vaccine, Polyvalent (23-valent), Pneumococcal Conjugate Vaccine, Heptavalent, Hepatitis B Vaccine (Recombinant)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
2 Years to 18 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2004
U.S. locations
38
States / cities
Birmingham, Alabama • Long Beach, California • Los Angeles, California + 26 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 25, 2026, 7:14 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity Study of Tdap Vaccinations for Plasma Donors

NCT05662852
View directory record Official record
Conditions
Tetanus, Diphtheria and Acellular Pertussis Vaccination
Interventions
Tdap
Biological
Lead sponsor
ABO Holdings, Inc.
Industry
Eligibility
18 Years to 63 Years
Enrollment
107 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Glassboro, New Jersey
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Sep 25, 2026, 7:14 AM EDT