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ClinicalTrials.gov public records Last synced Oct 27, 2026, 1:36 PM EDT

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Showing 1–24 of 33 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Helminthic Infection Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immunogenicity of the Na-APR-1 Hookworm Vaccine in Healthy Adults

NCT01717950
View directory record Official record
Conditions
Hookworm Infection, Hookworm Disease
Interventions
Na-APR-1 (M74)/Alhydrogel®, Gluco-Pyranosylphospho-Lipid A Aqueous Formulation
Biological
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 50 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 31, 2019 · Synced Oct 27, 2026, 1:36 PM EDT
Recruiting No phase listed Observational

Host Response to Infection and Treatment in Filarial Diseases

NCT00001230
View directory record Official record
Conditions
Filariasis, Helminthiasis, Parasitic Infection, Mansonelliasis, Onchocerciasis
Interventions
Diethylcarbamazine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
3 Years to 100 Years
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1991
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 8, 2026 · Synced Oct 27, 2026, 1:36 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 2, 2017 · Synced Oct 27, 2026, 1:36 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Experimental Infection of Hookworm-naïve Adults With Dermally-applied Infectious Necator Americanus Hookworm Larvae

NCT01940757
View directory record Official record
Conditions
Hookworm Infection
Interventions
Necator americanus Hookworm Larvae
Biological
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 45 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2027
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Oct 27, 2026, 1:36 PM EDT
Terminated No phase listed Observational

People Presenting With Neurocysticercosis in North America

NCT02233855
View directory record Official record
Conditions
Neurocysticercosis
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
4
States / cities
San Francisco, California • Bethesda, Maryland • Dallas, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 5, 2018 · Synced Oct 27, 2026, 1:36 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

PET Imaging of Peripheral Benzodiazepine Receptors in Patients With Neurocysticercosis Using [C-11]PBR28

NCT00526916
View directory record Official record
Conditions
Neurocysticercosis, Healthy
Interventions
[C-11]PBR28
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 75 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2014
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 12, 2019 · Synced Oct 27, 2026, 1:36 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Doxycycline to Treat Mansonella Perstans Infection in Patients With and Without Lymphatic Filariasis

NCT00340691
View directory record Official record
Conditions
Mansonella Perstans Infection, Mp Microfilaremia
Interventions
Doxycycline
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
14 Years to 65 Years
Enrollment
1,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 27, 2026, 1:36 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Repeat Ivermectin Mass Drug Administrations for Control of Malaria: a Pilot Safety and Efficacy Study

NCT02509481
View directory record Official record
Conditions
Malaria, Lymphatic Filariasis
Interventions
Ivermectin, Albendazole
Drug
Lead sponsor
Colorado State University
Other
Eligibility
Not listed
Enrollment
2,712 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 4, 2019 · Synced Oct 27, 2026, 1:36 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

HIV Accelerated Liver Disease in Uganda

NCT01524562
View directory record Official record
Conditions
Fibrosis
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 99 Years
Enrollment
786 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 6, 2020 · Synced Oct 27, 2026, 1:36 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Efficacy of Na-GST-1/Alhydrogel Hookworm Vaccine Assessed by Controlled Challenge Infection

NCT03172975
View directory record Official record
Conditions
Hookworm Infections
Interventions
Na-GST-1/Alhydrogel, Na-GST-1/Alhydrogel + CPG 10104, Na-GST-1/Alhydrogel + GLA-AF, Placebo, Albendazole, Necator americanus Larval Inoculum
Biological · Drug · Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 45 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2025
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Oct 27, 2026, 1:36 PM EDT
Terminated No phase listed Observational

Immune Responses to Mycobacterium Tuberculosis (Mtb) in People With Latent Tuberculosis Infection With or Without Concomitant Helminth Infection

NCT02225158
View directory record Official record
Conditions
Latent Tuberculosis Infection
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
2
States / cities
Bethesda, Maryland • Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 27, 2026, 1:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Integrating Community Interventions to Eliminate Neglected Tropical Diseases

NCT03667079
View directory record Official record
Conditions
Rabies in Animals, Worms; Intestine
Interventions
integrated delivery of deworming and vaccination, Mass deworming only, Mass vaccination of dogs
Other
Lead sponsor
Washington State University
Other
Eligibility
Not listed
Enrollment
28,143 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Spokane, Washington
Source: ClinicalTrials.gov public record
Updated May 1, 2023 · Synced Oct 27, 2026, 1:36 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Natural History of Treated Neurocysticercosis and Long-Term Outcomes

NCT00001205
View directory record Official record
Conditions
Cysticercosis, Neurocysticercosis
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
3 Years to 99 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 1985
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 27, 2026, 1:36 PM EDT
Recruiting No phase listed Observational

Evaluation, Treatment and Monitoring of Patients With a Known or Suspected Parasitic Infection

NCT00001645
View directory record Official record
Conditions
Malaria, Intestinal Worms, GI Protozoa, Echiniococcus, Strongyloides
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
3 Years and older
Enrollment
800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1998
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 27, 2026, 1:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Development of a Skin Test for the Na-ASP-2 Hookworm Antigen

NCT00603889
View directory record Official record
Conditions
Hookworm Infection, Allergy
Interventions
Na-ASP-2 Skin Test Reagent
Biological
Lead sponsor
Albert B. Sabin Vaccine Institute
Other
Eligibility
18 Years to 45 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Feb 23, 2012 · Synced Oct 27, 2026, 1:36 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of a Human Hookworm Candidate Vaccine With Different Doses of a Novel Adjuvant

NCT01385189
View directory record Official record
Conditions
Hookworm Infection, Hookworm Disease
Interventions
10 μg Na-GST-1/Alhydrogel, 30 μg Na-GST-1/Alhydrogel, 100 μg Na-GST-1/Alhydrogel, 10 μg Na-GST-1/Alhydrogel/GLA-AF (1 μg), 30 μg Na-GST-1/Alhydrogel/GLA-AF (1 μg), 30 μg Na-GST-1/Alhydrogel/GLA-AF (5 μg), 100 μg Na-GST-1/Alhydrogel/GLA-AF (5 μg)
Biological
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 45 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jan 6, 2025 · Synced Oct 27, 2026, 1:36 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Phase I Study of the Safety, Reactogenicity, and Immunogenicity of Sm-TSP-2/Alhydrogel® With or Without GLA-AF for Intestinal Schistosomiasis in Healthy Adults

NCT02337855
View directory record Official record
Conditions
Schistosomiasis
Interventions
Placebo, Sm-TSP-2/Alhydrogel, Sm-TSP-2/Alhydrogel/GLA-AF
Other · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 26, 2017 · Synced Oct 27, 2026, 1:36 PM EDT
Recruiting No phase listed Observational

Activation and Function of Eosinophils in Conditions With Blood or Tissue Eosinophilia

NCT00001406
View directory record Official record
Conditions
Immune System Diseases, Eosinophilia, Helminthiasis, Hypersensitivity, Parasitic Disease
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
1 Year to 100 Years
Enrollment
800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1997
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 27, 2026, 1:36 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of Na-ASP-2 Human Hookworm Vaccine in Healthy Adults Without Evidence of Hookworm Infection

NCT00120081
View directory record Official record
Conditions
Hookworm Infection
Interventions
Na-ASP-2/Alhydrogel Hookworm Vaccine, Saline placebo
Biological
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 45 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated May 31, 2017 · Synced Oct 27, 2026, 1:36 PM EDT
Completed No phase listed Observational

Study of Patients With Strongyloides Stercoralis Infection

NCT00001245
View directory record Official record
Conditions
HIV Infection, Nematode Infection, Strongyloidiasis
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
8 Years to 80 Years
Enrollment
650 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1989
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 25, 2009 · Synced Oct 27, 2026, 1:36 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Phase I Trial Evaluating the Safety and Pharmacokinetics of Oxfendazole

NCT02234570
View directory record Official record
Conditions
Neurocysticercosis
Interventions
Oxfendazole, Placebo
Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Nov 2, 2020 · Synced Oct 27, 2026, 1:36 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Controlled Human Infection Study of Orally Administered Trichuris Trichiura Eggs in Naïve Adults

NCT05706116
View directory record Official record
Conditions
Whipworm, Trichuriasis, Controlled Human Infection
Interventions
Trichuris trichiura Egg Inoculum
Biological
Lead sponsor
George Washington University
Other
Eligibility
18 Years to 45 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Oct 27, 2026, 1:36 PM EDT
Terminated Phase 3 Interventional Results available

Treatment of Strongyloides Infection

NCT03605758
View directory record Official record
Conditions
Strongyloides Stercoralis Infection, Strongyloidiasis
Interventions
Ivermectin
Drug
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
18 Years and older
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Nov 30, 2023 · Synced Oct 27, 2026, 1:36 PM EDT
Completed No phase listed Observational

Effect of Filarial Infection on Immune Responses in Latent Tuberculosis

NCT01547884
View directory record Official record
Conditions
Mycobacterium Infections, Tuberculosis, Filariasis, Latent Tuberculosis
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
4,268 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 20, 2021 · Synced Oct 27, 2026, 1:36 PM EDT