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ClinicalTrials.gov public records Last synced Oct 19, 2026, 6:20 AM EDT

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Showing 1–24 of 37 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Human Challenge virus Clear all
Completed Phase 2 Interventional

Mucosal and Systemic Immunity After Viral Challenge of Healthy Volunteers Vaccinated With Inactivated Influenza Vaccine Via the Intranasal Versus Intramuscular Route

NCT03845231
View directory record Official record
Conditions
Influenza
Interventions
Flucelvax(R), Human Challenge virus
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 55 Years
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 10, 2020 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Homologous Re-infection With Dengue 1 or Dengue 3

NCT05967455
View directory record Official record
Conditions
Dengue
Interventions
Dengue virus 1 Live Virus Human Challenge (DENV-1-LVHC), Dengue virus 3 Live Virus Human Challenge (DENV-3-LVHC)
Biological
Lead sponsor
State University of New York - Upstate Medical University
Other
Eligibility
18 Years to 55 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Nov 13, 2024 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Phase 1 Interventional

Influenza A H3N2 Human Challenge Study in Healthy Adult Volunteers

NCT02594189
View directory record Official record
Conditions
Determine Minimally to Moderately Infective Dose (MMID) of Influenza A H3N2
Interventions
Live recombinantly derived A/Bethesda/MM1/H3N2 virus
Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 3, 2019 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

H1N1v Virus Challenge Study in Healthy Subjects

NCT04044352
View directory record Official record
Conditions
Influenza
Interventions
Influenza A/Bethesda/MM2/H1N1 Challenge
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
4
States / cities
Baltimore, Maryland • St Louis, Missouri • Durham, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 28, 2021 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Evaluation of Anti-Hemagglutinin (Anti-HA) Antibodies as Protection From the Flu in Healthy People

NCT01971255
View directory record Official record
Conditions
Influenza
Interventions
Ca/04/2009/H1N1r Challenge Virus
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
74 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 24, 2017 · Synced Oct 19, 2026, 6:20 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Influenza Human Challenge Model

NCT05332899
View directory record Official record
Conditions
Influenza
Interventions
Influenza Virus Type A H3N2 Challenge
Biological
Lead sponsor
Emory University
Other
Eligibility
18 Years to 49 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 27, 2026 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Evaluation of Infectivity and Illness of Norwalk GI.1 Virus Lot 001-09NV in the Human Challenge Model

NCT03721549
View directory record Official record
Conditions
Norovirus Infection
Interventions
Norwalk GI.1 Virus
Biological
Lead sponsor
WCCT Global
Industry
Eligibility
18 Years to 49 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Costa Mesa, California
Source: ClinicalTrials.gov public record
Updated Jan 22, 2020 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Reality Check: An HIV Risk Reduction Serial Drama

NCT03352219
View directory record Official record
Conditions
HIV (Human Immunodeficiency Virus), Sexually Transmitted Diseases
Interventions
Reality Check, Physical Activity Attention Control
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 24 Years
Enrollment
203 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 24, 2017 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Infectivity of Norovirus in Shellfish Treated With High Hydrostatic Pressure Processing-Human Challenge Study

NCT00674336
View directory record Official record
Conditions
Healthy
Interventions
High Hydrostatic Pressure Processing
Procedure
Lead sponsor
Emory University
Other
Eligibility
18 Years to 50 Years
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 19, 2013 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Efficacy and Safety of CR6261 in an H1N1 Influenza Healthy Volunteer Human Challenge Model

NCT02371668
View directory record Official record
Conditions
H1N1 Influenza Healthy Volunteers
Interventions
CR6261, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 17, 2020 · Synced Oct 19, 2026, 6:20 AM EDT
Recruiting Not applicable Interventional

Identifying Challenges to Healthy Aging in Persons With Human Immunodeficiency Virus (HIV) Age 50 and Older

NCT05858034
View directory record Official record
Conditions
HIV, Aging
Interventions
Customized activity plan, Customized nutrition plan
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
50 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Dengue 4 Human Infection Model (Dengue CVD 11000; DHIM-4)

NCT05268302
View directory record Official record
Conditions
Dengue
Interventions
Dengue 4 Live Virus Human Challenge (DENV-4-LVHC) - Low Dose, Dengue 4 Live Virus Human Challenge (DENV-4-LVHC) - Low Dose - Homologous Rechallenge
Biological
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 17, 2025 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

ADVP005; Dengue CVD 12000 - Dengue-1-Virus Live Virus Human Challenge (DENV-1-LVHC)

NCT04786457
View directory record Official record
Conditions
Dengue
Interventions
Dengue 1 Live Virus Human Challenge (DENV-1-LVHC)
Biological
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 50 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 27, 2025 · Synced Oct 19, 2026, 6:20 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Pilot Influenza Challenge Study

NCT07063849
View directory record Official record
Conditions
Influenza
Interventions
A/Texas
Biological
Lead sponsor
Daniel Hoft, MD, PhD
Other
Eligibility
18 Years to 45 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 14, 2025 · Synced Oct 19, 2026, 6:20 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

A/Texas Flu Challenge

NCT06753474
View directory record Official record
Conditions
Influenza
Interventions
Influenza Virus influenza A H3N2 strain
Biological
Lead sponsor
Emory University
Other
Eligibility
18 Years to 49 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 3, 2026 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Phase 1 Interventional

Low Pathogenicity Avian H10N7 Influenza Virus in a Healthy Human Challenge Model

NCT05436444
View directory record Official record
Conditions
Influenza Infection
Interventions
A/Mallard/Ohio-99/MM4/1989 H10N7
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 11, 2025 · Synced Oct 19, 2026, 6:20 AM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

Safety and Effectiveness of a Seasonal Live Attenuated Influenza Vaccine in a Human Challenge Model of Infection With Wild-type (wt) Influenza A/California/2009 (H1N1)-Like Virus

NCT02950688
View directory record Official record
Conditions
Influenza, Human
Interventions
Seasonal LAIV, Placebo, Wild-type A/California/2009-like Influenza Virus
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Healthy volunteers
Accepts healthy volunteers
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Nov 29, 2017 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Not applicable Interventional Results available

HIV Acquired Lipodystrophy (HAL) Classification, Measurement and Fat Response to Thiazolidinedione (TZD) (Pioglitazone)

NCT01023620
View directory record Official record
Conditions
HIV Infections
Interventions
Pioglitazone, Observation
Drug · Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older · Male only
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Oct 8, 2019 · Synced Oct 19, 2026, 6:20 AM EDT
Not yet recruiting No phase listed Observational Accepts healthy volunteers

C-3002: Enhancing Cervical Cancer Screening Access and Follow-up Care at 'CASCADE' Clinical Sites in the United States

NCT07520188
View directory record Official record
Conditions
Human Immunodeficiency Virus (HIV), Human Papillomavirus (HPV), Cervical Cancer, Cervical Precancer
Interventions
Qualitative interviews, Focus groups
Behavioral
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
25 Years and older
Enrollment
3,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
2
States / cities
Atlanta, Georgia • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

New Challenge Pool of Norwalk Virus Inoculum

NCT00138476
View directory record Official record
Conditions
Gastroenteritis Norovirus
Interventions
Placebo, Norwalk Virus
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 9, 2014 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Phase 1 Interventional

Respiratory Syncytial Virus Human Challenge in Healthy Adult Volunteers

NCT02484417
View directory record Official record
Conditions
Upper Respiratory Tract Infection
Interventions
RSV A2
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Expansion of a Dengue-1 Live Virus Human Challenge

NCT03869060
View directory record Official record
Conditions
Dengue
Interventions
Dengue-1 Virus-Live Virus Human Challenge (DENV-1-LVHC)
Biological
Lead sponsor
State University of New York - Upstate Medical University
Other
Eligibility
18 Years to 45 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Apr 11, 2024 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Dengue 3 Human Infection Model (DENV-3)

NCT04298138
View directory record Official record
Conditions
Dengue
Interventions
Dengue virus 3 Live Virus Human Challenge (DENV-3-LVHC)
Biological
Lead sponsor
State University of New York - Upstate Medical University
Other
Eligibility
18 Years to 45 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Apr 11, 2024 · Synced Oct 19, 2026, 6:20 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety Study of a Human Metapneumovirus Challenge Virus in Healthy Adults

NCT01109329
View directory record Official record
Conditions
Human Metapneumovirus
Interventions
HMPV challenge virus
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 3, 2013 · Synced Oct 19, 2026, 6:20 AM EDT