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Showing 1–24 of 2,758 matching trials from the live ClinicalTrials.gov search.
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Filters: Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) Clear all
Completed Phase 2 Interventional Accepts healthy volunteers

A Phase II Clinical Trial to Evaluate the Immunogenicity and Reactogenicity of the Recombinant HIV-1 Envelope Vaccines SF-2 rgp120 (CHO) [Chiron Vaccines] in MF59 Adjuvant and MN rgp120/HIV-1 [VaxGen] in Alum Adjuvant in Healthy Adults

NCT00001031
View directory record Official record
Conditions
HIV Infections
Interventions
rgp120/HIV-1MN, rgp120/HIV-1 SF-2
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
16 Years to 60 Years
Enrollment
296 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 1997
U.S. locations
7
States / cities
Birmingham, Alabama • St Louis, Missouri • Rochester, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 3, 2021 · Synced Jul 23, 2026, 2:24 PM EDT
Completed No phase listed Observational

Brain Tissue Swelling and Seizure Activity in Inactive Cysticercosis

NCT00001912
View directory record Official record
Conditions
Cysticercosis, Cysts, Seizures
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2012
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 23, 2026, 2:24 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Rituximab for the Treatment of Wegener's Granulomatosis and Microscopic Polyangiitis

NCT00104299
View directory record Official record
Conditions
Vasculitis, Wegener's Granulomatosis, Microscopic Polyangiitis
Interventions
Rituximab plus cyclophosphamide placebo (rituximab group), Cyclophosphamide plus rituximab placebo (control group), Azathioprine, Methylprednisolone (or other glucocorticoid), Prednisone
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
15 Years and older
Enrollment
197 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
7
States / cities
Birmingham, Alabama • Baltimore, Maryland • Boston, Massachusetts + 4 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2017 · Synced Jul 23, 2026, 2:24 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immune Response to a Live-Attenuated Respiratory Syncytial Virus (RSV) Vaccine in RSV-Seronegative Infants and Children

NCT02040831
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
RSV LID ΔM2-2 Vaccine, Placebo Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Months to 24 Months
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 20, 2016 · Synced Jul 23, 2026, 2:24 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Evaluating the Infectivity, Safety, and Immunogenicity of a Respiratory Syncytial Virus Vaccine (RSV 6120/∆NS2/1030s) in RSV-Seropositive Children and RSV-Seronegative Infants and Children

NCT03387137
View directory record Official record
Conditions
RSV Infection
Interventions
RSV 6120/∆NS2/1030s, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Months to 60 Months
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 10, 2024 · Synced Jul 23, 2026, 2:24 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Study of LIPO-5 and ALVAC-HIV (vCP1452) as Possible HIV Vaccines

NCT00076063
View directory record Official record
Conditions
HIV Infections
Interventions
ALVAC-HIV (vCP1452), LIPO-5
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
174 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
11
States / cities
Birmingham, Alabama • Baltimore, Maryland • Boston, Massachusetts + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2021 · Synced Jul 23, 2026, 2:24 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Safety and Immunogenicity Trial of PepGNP-COVID19 Vaccine in Adults

NCT07183709
View directory record Official record
Conditions
COVID-19
Interventions
PepGNP-COVID19, Sterile Water for Injection
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
3
States / cities
Birmingham, Alabama • Washington D.C., District of Columbia • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Jul 23, 2026, 2:24 PM EDT
Recruiting Phase 1Phase 2 Interventional

Fecal Microbiota Transplantation for Chronic Granulomatous Disease-Associated Colitis

NCT05333471
View directory record Official record
Conditions
Chronic Granulomatous Disease-associated Colitis
Interventions
MTP 101-LF
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
10 Years to 60 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 30, 2026 · Synced Jul 23, 2026, 2:24 PM EDT
Withdrawn Phase 1Phase 2 Interventional

CREATE - Cabotegravir & Rilpivirine Antiretroviral Therapy in Pregnancy

NCT06336434
View directory record Official record
Conditions
HIV-1-infection, Pregnancy, Postpartum
Interventions
CAB LA 600mg, RPV LA 900mg, CAB LA 400mg, RPV LA 600mg
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
4
States / cities
La Jolla, California • Los Angeles, California • Baltimore, Maryland + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 30, 2025 · Synced Jul 23, 2026, 2:24 PM EDT
Completed Phase 2 Interventional

The Immunological and Blood Effects of STA-5326 Mesylate on Patients With Crohn's Disease

NCT00250198
View directory record Official record
Conditions
Crohn's Disease
Interventions
STA-5326
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 75 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 23, 2026, 2:24 PM EDT
Completed No phase listed Observational

Withdrawal of Antifungal Treatment for Histoplasmosis in Patients After Improved Immune Response to Anti-HIV Drugs

NCT00006316
View directory record Official record
Conditions
HIV Infections, Histoplasmosis
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
13
States / cities
Los Angeles, California • San Francisco, California • Atlanta, Georgia + 8 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2008 · Synced Jul 23, 2026, 2:24 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Dynamics of Colonization and Infection by Multidrug-Resistant Pathogens in Immunocompromised and Critically Ill Patients

NCT06258551
View directory record Official record
Conditions
Antimicrobial Drug Resistance, Antibiotic Resistant Infection, Clostridium Difficile, Carbapenem-Resistant Enterobacteriaceae Infection, Extended Spectrum Beta-Lactamase Producing Bacteria Infection, Vancomycin Resistant Enterococci Infection, Carbapenem Resistant Bacterial Infection, Vancomycin-Resistant Enterococcal Infection
Interventions
Not listed
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 13, 2024 · Synced Jul 23, 2026, 2:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

PreTeenVax Evaluation

NCT03186430
View directory record Official record
Conditions
Human Papilloma Virus
Interventions
Comprehensive Vaccine Promotion Package
Behavioral
Lead sponsor
Emory University
Other
Eligibility
11 Years to 12 Years
Enrollment
168 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
6
States / cities
Canton, Georgia • Duluth, Georgia • Lawrenceville, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 7, 2018 · Synced Jul 23, 2026, 2:24 PM EDT
Not listed Not applicable Interventional

Treatment Intensification for HIV Infected Patients With Multi-Drug Resistant Virus

NCT00102934
View directory record Official record
Conditions
HIV Infections
Interventions
Enfuvirtide-intensified HAART
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2009
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 16, 2008 · Synced Jul 23, 2026, 2:24 PM EDT
Terminated Phase 2 Interventional Results available

A Study to Evaluate the Anti-inflammatory Effects of Letermovir (Prevymis) in Adults With Human Immunodeficiency Virus (HIV)-1 and Asymptomatic Cytomegalovirus (CMV) Who Are on Suppressive Antiretroviral Therapy, Plus Its Effect on Chronic Inflammation, HIV Persistence and Other Clinical Outcomes.

NCT04840199
View directory record Official record
Conditions
HIV Infections, Cytomegalovirus, CMV
Interventions
Letermovir Oral Tablet
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
40 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
15
States / cities
San Diego, California • San Francisco, California • Aurora, Colorado + 11 more
Source: ClinicalTrials.gov public record
Updated Mar 3, 2025 · Synced Jul 23, 2026, 2:24 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Open Label Evaluation of H5N1 Vaccine at Vaccine Manufacturing Facilities

NCT00311649
View directory record Official record
Conditions
Influenza
Interventions
Inactivated Influenza A Vaccine A/H5N1
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
83 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Swiftwater, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 11, 2011 · Synced Jul 23, 2026, 2:24 PM EDT
Completed Not applicable Interventional

Continuous High-Dose Intravenous Dextran Sulfate in Human Immunodeficiency Virus-Infected Individuals

NCT00000684
View directory record Official record
Conditions
HIV Infections
Interventions
Dextran sulfate
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
19 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1991
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 2, 2021 · Synced Jul 23, 2026, 2:24 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

H5 Adult - Chiron Study of Bird Flu Vaccine

NCT00280033
View directory record Official record
Conditions
Influenza
Interventions
Aluminum hydroxide, Inactivated Influenza A/H5N1 Vaccine (Chiron), MF-59, Placebo
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
394 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
4
States / cities
Stanford, California • St Louis, Missouri • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 12, 2013 · Synced Jul 23, 2026, 2:24 PM EDT
Completed Phase 1 Interventional Results available

Safety and Immunogenicity of an Epstein-Barr Virus (EBV) gp350-Ferritin Nanoparticle Vaccine in Healthy Adults

NCT04645147
View directory record Official record
Conditions
EBV, Epstein-Barr Virus Infection, Infectious Mononucleosis
Interventions
EBV gp350-Ferritin Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 29 Years
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Jul 23, 2026, 2:24 PM EDT
Recruiting Phase 2 Interventional

High vs.Standard Dose Influenza Vaccine in Pediatric Solid Organ Transplant (SOT) Recipients

NCT05947071
View directory record Official record
Conditions
Immunization; Infection, Transplantation Infection, Influenza
Interventions
Standard Dose Quadrivalent Inactivated Influenza Vaccine, High Dose Quadrivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
3 Years to 17 Years
Enrollment
312 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
8
States / cities
Stanford, California • Atlanta, Georgia • Chicago, Illinois + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Jul 23, 2026, 2:24 PM EDT
Completed No phase listed Observational

Noninvasive Methods to Monitor Graft Survival in Heart Transplant Patients

NCT00466804
View directory record Official record
Conditions
Heart Transplant
Interventions
Heart transplant
Procedure
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
10 Years and older
Enrollment
263 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
12
States / cities
San Francisco, California • Chicago, Illinois • Maywood, Illinois + 7 more
Source: ClinicalTrials.gov public record
Updated Dec 31, 2015 · Synced Jul 23, 2026, 2:24 PM EDT
Completed No phase listed Observational

Effects of Therapeutic HIV Vaccination on Control of HIV After Discontinuation of Anti-HIV Drugs

NCT00050063
View directory record Official record
Conditions
HIV Infections
Interventions
Therapeutic vaccinations from A5058s
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2004
U.S. locations
14
States / cities
Torrance, California • Aurora, Colorado • Indianapolis, Indiana + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Jul 23, 2026, 2:24 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

H7N9 Boost in Healthy Adults

NCT02586792
View directory record Official record
Conditions
Influenza
Interventions
Monovalent influenza A/H7N9 virus vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
19 Years to 50 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 21, 2018 · Synced Jul 23, 2026, 2:24 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

First-in-Human PfSPZ-LARC2 Vaccination/CHMI

NCT06735209
View directory record Official record
Conditions
Malaria
Interventions
PfSPZ Vaccine, PfSPZ (7G8) Challenge, Sodium Chloride, 0.9%
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 23, 2026, 2:24 PM EDT