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Showing 1–24 of 37 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Human Challenge virus Clear all
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 26, 2026 · Synced Sep 3, 2026, 7:05 PM 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 16, 2020 · Synced Sep 3, 2026, 7:05 PM 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 23, 2017 · Synced Sep 3, 2026, 7:05 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

BPL-1357 Against H1N1 Influenza Virus Challenge

NCT07215858
View directory record Official record
Conditions
Influenza, Human
Interventions
BPL-1357 IM, BPL-1357 IN, Placebo IM, Placebo IN
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 55 Years
Enrollment
129 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
2
States / cities
Bethesda, Maryland • Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 3, 2026, 7:05 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Assessment of a Dengue-1-Virus-Live Virus Human Challenge - (DENV-1-LVHC) Virus Strain

NCT02372175
View directory record Official record
Conditions
Dengue
Interventions
Dengue-1 Virus-Live Virus Human Challenge (DENV-1-LVHC)
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 45 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Jul 14, 2019 · Synced Sep 3, 2026, 7:05 PM 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 26, 2026 · Synced Sep 3, 2026, 7:05 PM 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 2, 2026 · Synced Sep 3, 2026, 7:05 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Study to Examine the Effects of Oral Fenretinide

NCT06528457
View directory record Official record
Conditions
Dengue
Interventions
ISLA101, Dengue 1 Live Virus Human Challenge (DENV-1-LVHC), Placebo
Drug · Other
Lead sponsor
Island Pharmaceuticals
Industry
Eligibility
18 Years to 55 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
East Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Oct 23, 2025 · Synced Sep 3, 2026, 7:05 PM 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 10, 2025 · Synced Sep 3, 2026, 7:05 PM 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 8, 2014 · Synced Sep 3, 2026, 7:05 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Norovirus Challenge Study

NCT05212168
View directory record Official record
Conditions
Norovirus Infections
Interventions
VXA-G1.1-NN, Placebo Tablets, Norovirus GI.1 Norwalk Virus Inoculum
Biological · Other
Lead sponsor
Vaxart
Industry
Eligibility
18 Years to 49 Years
Enrollment
165 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Cypress, California
Source: ClinicalTrials.gov public record
Updated Nov 4, 2025 · Synced Sep 3, 2026, 7:05 PM 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 7, 2019 · Synced Sep 3, 2026, 7:05 PM 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 27, 2021 · Synced Sep 3, 2026, 7:05 PM 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 13, 2025 · Synced Sep 3, 2026, 7:05 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Norwalk Vaccine Study

NCT00973284
View directory record Official record
Conditions
Acute Gastroenteritis, Norwalk Virus Infection
Interventions
Norwalk VLP vaccine, mannitol and sucrose, Norwalk virus
Biological
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 50 Years
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
3
States / cities
Baltimore, Maryland • Cincinnati, Ohio • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 7, 2017 · Synced Sep 3, 2026, 7:05 PM 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 2, 2013 · Synced Sep 3, 2026, 7:05 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Trial to Evaluate the Safety and Systems Biology Response of Ebolavirus Zaire Vaccine (ChAd3-EBO-Z)

NCT03583606
View directory record Official record
Conditions
Ebola Disease, Immunisation
Interventions
ChAd3-EBO-Z, MVA Multi-Filo Ebola Vaccine, Placebo
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 28, 2025 · Synced Sep 3, 2026, 7:05 PM 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 28, 2017 · Synced Sep 3, 2026, 7:05 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Inpatient Challenge Study of rRSV A/Maryland/001/11, a Human Respiratory Syncytial Virus Challenge Strain, Administered to Healthy Adult Volunteers

NCT03624790
View directory record Official record
Conditions
Respiratory Syncytial Virus Infections
Interventions
rRSV A/Maryland/001/11
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 6, 2025 · Synced Sep 3, 2026, 7:05 PM 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 10, 2024 · Synced Sep 3, 2026, 7:05 PM 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 9, 2026 · Synced Sep 3, 2026, 7:05 PM 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 2, 2019 · Synced Sep 3, 2026, 7:05 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of Human Rhinovirus Type 16 (HRV-16) Following Administration in the Nose of Healthy Adult Volunteers

NCT01466738
View directory record Official record
Conditions
Healthy
Interventions
HRV-16 (100 TCID50), HRV-16 (1000 TCID50)
Biological
Lead sponsor
Centocor Ortho Biotech Services, L.L.C.
Industry
Eligibility
18 Years to 60 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 21, 2012 · Synced Sep 3, 2026, 7:05 PM 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 18, 2013 · Synced Sep 3, 2026, 7:05 PM EDT