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Showing 1–24 of 55 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Smallpox Clear all
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety, Tolerability and PK of TPOXX in Adults Weighing More Than 120 KG

NCT04392739
View directory record Official record
Conditions
Smallpox
Interventions
Tpoxx
Drug
Lead sponsor
SIGA Technologies
Industry
Eligibility
20 Years to 50 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 2 Interventional

Dryvax Dilution-Prev Vacc Adults

NCT00032708
View directory record Official record
Conditions
Smallpox
Interventions
Dryvax
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
90 participants
Timeline
2004
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 26, 2010 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 2 Interventional Results available

Randomized, Open-label Phase II Trial to Assess the Safety and Immunogenicity of MVA-BN Smallpox Vaccine in Immunocompromised Subjects With HIV Infection

NCT02038881
View directory record Official record
Conditions
Smallpox
Interventions
IMVAMUNE®
Biological
Lead sponsor
Bavarian Nordic
Industry
Eligibility
18 Years to 45 Years
Enrollment
87 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
10
States / cities
Birmingham, Alabama • Little Rock, Arkansas • San Francisco, California + 7 more
Source: ClinicalTrials.gov public record
Updated Apr 1, 2020 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Phase I Trial of an Investigational Small Pox Medication

NCT00728689
View directory record Official record
Conditions
Orthopoxviral Disease, Smallpox, Monkey Pox
Interventions
ST-246 Days 1 - 3, ST-246 Days 11 - 13
Drug
Lead sponsor
SIGA Technologies
Industry
Eligibility
18 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Jun 28, 2015 · Synced Sep 6, 2026, 11:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Post-licensure Department of Defense (DOD) Screening Accuracy Study in Military Personnel

NCT01540929
View directory record Official record
Conditions
Smallpox
Interventions
Not listed
Lead sponsor
Emergent BioSolutions
Industry
Eligibility
17 Years and older
Enrollment
5,001 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Alexandria, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 17, 2024 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Dressing Preparations for Smallpox

NCT00063856
View directory record Official record
Conditions
Smallpox
Interventions
Wetvax (APSV)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
102 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2004
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 12, 2012 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

High Dose IMVAMUNE® in Vaccinia-Naive Individuals

NCT00879762
View directory record Official record
Conditions
Smallpox
Interventions
MVA Smallpox Vaccine, Placebo
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 38 Years
Enrollment
91 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
2
States / cities
Iowa City, Iowa • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 12, 2025 · Synced Sep 6, 2026, 11:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

ACAM2000® Myopericarditis Registry

NCT01395082
View directory record Official record
Conditions
Myocarditis, Pericarditis
Interventions
Not listed
Lead sponsor
Emergent BioSolutions
Industry
Eligibility
17 Years and older
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2019
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Mar 17, 2024 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety, Tolerability, and Immune Response of ACAM3000 Modified Vaccinia Ankara (MVA) Smallpox Vaccine in Adults

NCT00079820
View directory record Official record
Conditions
Smallpox
Interventions
ACAM3000 MVA Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years to 31 Years
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2006
U.S. locations
2
States / cities
Lenexa, Kansas • Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jan 12, 2014 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Phase I/II Trial of Modified Vaccinia Virus Ankara (MVA) Vaccine Against Smallpox

NCT00053742
View directory record Official record
Conditions
Healthy
Interventions
Modified Vaccinia Virus Ankara TBC-MVA
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2006
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

ACAM 3000 MVA at Harvard Medical School

NCT00133575
View directory record Official record
Conditions
Smallpox
Interventions
MVA Smallpox Vaccine, Placebo, Live vaccinia virus vaccine
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 38 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 4, 2015 · Synced Sep 6, 2026, 11:09 AM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

SIGA-246 to Treat Smallpox

NCT00303225
View directory record Official record
Conditions
Vaccinia
Interventions
Vaccine: SIGA-246
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Combination Study With MVA BN and Dryvax

NCT00082446
View directory record Official record
Conditions
Smallpox
Interventions
Live vaccinia virus vaccine, MVA Smallpox Vaccine, Placebo
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 32 Years
Enrollment
91 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 18, 2014 · Synced Sep 6, 2026, 11:09 AM EDT
Withdrawn No phase listed Observational

A Phase 4, Observational Field Study to Evaluate TPOXX in Patients With Smallpox

NCT03972111
View directory record Official record
Conditions
Smallpox
Interventions
TPOXX 200Mg Capsule
Drug
Lead sponsor
SIGA Technologies
Industry
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Corvallis, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 2, 2022 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 1 Interventional

Poly-ICLC to Prevent Respiratory Viral Infections A Safety Study

NCT00646152
View directory record Official record
Conditions
Influenza, Severe Acute Respiratory Distress Syndrome, Smallpox, Ebola, Unknown Respiratory Viruses
Interventions
Poly-ICLC
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 4, 2018 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Dose Study of ACAM2000 Smallpox Vaccine in Previously Vaccinated Adults

NCT00053482
View directory record Official record
Conditions
Smallpox
Interventions
ACAM2000 Smallpox Vaccine, Vaccinia virus (calf lymph) smallpox vaccine: Dryvax®
Biological
Lead sponsor
Emergent BioSolutions
Industry
Eligibility
28 Years and older
Enrollment
357 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003
U.S. locations
3
States / cities
Lenexa, Kansas • Springfield, Missouri • Pawtucket, Rhode Island
Source: ClinicalTrials.gov public record
Updated Mar 17, 2024 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Freeze-Dried MVA-BN® Lot Consistency Smallpox Trial

NCT03699124
View directory record Official record
Conditions
Smallpox
Interventions
FD MVA-BN
Biological
Lead sponsor
Bavarian Nordic
Industry
Eligibility
18 Years to 45 Years
Enrollment
1,129 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
12
States / cities
Birmingham, Alabama • Melbourne, Florida • Peoria, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated May 26, 2021 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

VA-006 Vaccinia Vaccine (ACAM2000) for the Production of VIGIV

NCT01158157
View directory record Official record
Conditions
Smallpox Vaccine Adverse Reaction
Interventions
ACAM2000
Biological
Lead sponsor
Emergent BioSolutions
Industry
Eligibility
18 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Altamonte Springs, Florida
Source: ClinicalTrials.gov public record
Updated Mar 17, 2024 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 3 Interventional Results available

Study to Assess Brincidofovir Treatment of Serious Diseases or Conditions Caused by Double-stranded DNA Viruses

NCT01143181
View directory record Official record
Conditions
Double-stranded DNA Virus
Interventions
Brincidofovir
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
Not listed
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
37
States / cities
Loma Linda, California • Los Angeles, California • Orange, California + 29 more
Source: ClinicalTrials.gov public record
Updated Aug 11, 2021 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

MVA Post-Event: Administration Timing and Boost Study

NCT00437021
View directory record Official record
Conditions
Smallpox
Interventions
Live vaccinia virus vaccine, MVA Smallpox Vaccine, Placebo
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 38 Years
Enrollment
226 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
7
States / cities
Iowa City, Iowa • Baltimore, Maryland • St Louis, Missouri + 4 more
Source: ClinicalTrials.gov public record
Updated Sep 18, 2025 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effect of Dose, Safety, Tolerability of a New Smallpox Vaccine in Adults Without Previous Smallpox Vaccination

NCT00053495
View directory record Official record
Conditions
Smallpox
Interventions
Vaccinia virus: ACAM2000 smallpox vaccine, vaccinia virus (calf lymph): Dryvax
Biological
Lead sponsor
Emergent BioSolutions
Industry
Eligibility
18 Years to 29 Years
Enrollment
353 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003
U.S. locations
4
States / cities
Orlando, Florida • Lenexa, Kansas • Springfield, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2024 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 1Phase 2 Interventional

Safety, Tolerability and Immune Response of IMVAMUNE (MVA-BN)Smallpox Vaccine in HIV Infected Patients

NCT00189904
View directory record Official record
Conditions
HIV Infections
Interventions
IMVAMUNE (MVA-BN)
Biological
Lead sponsor
Bavarian Nordic
Industry
Eligibility
18 Years to 55 Years
Enrollment
151 participants
Timeline
Started 2005
U.S. locations
5
States / cities
Indianapolis, Indiana • Lexington, Kentucky • St Louis, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 27, 2012 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of Reactogenicity, Safety, Immunogenicity, and Pock Lesion Formation of a Cell-Cultured Smallpox Vaccine Compared to Dryvax®

NCT00042094
View directory record Official record
Conditions
Smallpox
Interventions
Cell-Cultured Smallpox Vaccine compared to Dryvax®
Biological
Lead sponsor
DynPort Vaccine Company LLC, A GDIT Company
Industry
Eligibility
18 Years to 65 Years
Enrollment
350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2003
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jun 29, 2011 · Synced Sep 6, 2026, 11:09 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Lyophilized IMVAMUNE® (1x10^8 TCID50) Versus Liquid IMVAMUNE® (1x10^8 TCID50) Administered Subcutaneously and a Lower Dose Liquid IMVAMUNE® (2x10^7 TCID50) Administered Intradermally

NCT00914732
View directory record Official record
Conditions
Smallpox
Interventions
MVA Smallpox Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 38 Years
Enrollment
523 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
8
States / cities
Decatur, Georgia • Iowa City, Iowa • Baltimore, Maryland + 4 more
Source: ClinicalTrials.gov public record
Updated Feb 2, 2021 · Synced Sep 6, 2026, 11:09 AM EDT