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ClinicalTrials.gov public records Last synced Oct 23, 2026, 9:26 PM EDT

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Showing 1–24 of 65 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Infectious Encephalitis Clear all
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

SV2A & TSPO PET Imaging Measures to Reveal Mechanisms of HIV Neuropathogenesis During Antiretroviral Therapy

NCT05586581
View directory record Official record
Conditions
HIV Associated Neurocognitive Disorder, HIV Dementia, HIV Encephalitis, Healthy
Interventions
SV2A PET, TSPO PET
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 80 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2030
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 14, 2026 · Synced Oct 23, 2026, 9:26 PM EDT
Completed Not applicable Interventional

A Randomized Prospective Study of Pyrimethamine Therapy for Prevention of Toxoplasmic Encephalitis in HIV-Infected Individuals With Serologic Evidence of Latent Toxoplasma Gondii Infection

NCT00000666
View directory record Official record
Conditions
Toxoplasmosis, Cerebral, HIV Infections
Interventions
Pyrimethamine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1992
U.S. locations
16
States / cities
San Francisco, California • Denver, Colorado • New Haven, Connecticut + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 29, 2012 · Synced Oct 23, 2026, 9:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Vaccination Trial of a Recombinant MVA-BN-WEV Vaccine in Healthy Adult Subjects

NCT04131595
View directory record Official record
Conditions
Equine Encephalitis
Interventions
MVA-BN-WEV Dose 1, MVA-BN-WEV Dose 2, MVA-BN-WEV Dose 3
Biological
Lead sponsor
Bavarian Nordic
Industry
Eligibility
18 Years to 50 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 20, 2020 · Synced Oct 23, 2026, 9:26 PM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers

A Phase 1 Study Evaluating the Safety, Tolerability, and Immunogenicity of V4020 Vaccine in Healthy Volunteers

NCT07088822
View directory record Official record
Conditions
Venezuelan Equine Encephalitis, Venezuelan Equine Encephalitis Virus Infection
Interventions
V4020
Biological
Lead sponsor
Medigen, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 28, 2025 · Synced Oct 23, 2026, 9:26 PM EDT
Completed No phase listed Observational

Structure of the Herpes Simplex Virus Receptor

NCT00001648
View directory record Official record
Conditions
Encephalitis, Herpes Simplex, Keratitis, Mouth Disease, Skin Disease
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2010
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 23, 2026, 9:26 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Safety and Immunogenicity Study of the Eastern Equine Encephalitis (EEE) Vaccine

NCT02654509
View directory record Official record
Conditions
Eastern Equine Encephalitis
Interventions
Eastern Equine Encephalitis Vaccine, Inactivated, Dried, TSI-GSD 104
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 65 Years
Enrollment
138 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2018
U.S. locations
1
States / cities
Fort Deterick, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 17, 2020 · Synced Oct 23, 2026, 9:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Tick-Borne Encephalitis Vaccine (LGT(TP21)/DEN4) in Healthy Adults

NCT00118924
View directory record Official record
Conditions
Tick-Borne Encephalitis
Interventions
LGT(TP21)/DEN4, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 21, 2008 · Synced Oct 23, 2026, 9:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Phase I Study of West Nile Virus Vaccine

NCT00300417
View directory record Official record
Conditions
West Nile Fever
Interventions
VRC-WNVDNA020-00-VP
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 23, 2026, 9:26 PM EDT
Completed Not applicable Interventional

A Pilot Study of 566C80 for the Salvage Treatment of Toxoplasmic Encephalitis in Patients Infected With the Human Immunodeficiency Virus (HIV) Who Have Failed or Are Intolerant of Pyrimethamine-Sulfadiazine

NCT00001994
View directory record Official record
Conditions
Toxoplasmosis, Cerebral, HIV Infections
Interventions
Atovaquone
Drug
Lead sponsor
Glaxo Wellcome
Industry
Eligibility
13 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
18
States / cities
Los Angeles, California • Oakland, California • San Francisco, California + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 24, 2005 · Synced Oct 23, 2026, 9:26 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Control of Leukocyte Function

NCT03027232
View directory record Official record
Conditions
Inflammation, Brain
Interventions
No intervention (drugs) will be given. Purpose: collecting blood for in vitro studies
Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 27, 2018 · Synced Oct 23, 2026, 9:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of a DNA-based Venezuelan Equine Encephalitis Virus DNA Vaccine Administered by Electroporation in Healthy Volunteers

NCT01984983
View directory record Official record
Conditions
Venezuelan Equine Encephalitis Virus Infection
Interventions
Venezuelan Equine Encephalitis Virus DNA Vaccine Candidate, 0.9% saline placebo
Biological · Other
Lead sponsor
Ichor Medical Systems Incorporated
Industry
Eligibility
18 Years to 49 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Aug 26, 2015 · Synced Oct 23, 2026, 9:26 PM EDT
Recruiting No phase listed Observational

Risk of Progressive Multifocal Leukoencephalopathy Among Patients With Multiple Sclerosis Exposed to Zeposia

NCT07732907
View directory record Official record
Conditions
Multiple Sclerosis, Progressive Multifocal Leukoencephalopathy
Interventions
Ozanimod
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
Not listed
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2041
U.S. locations
1
States / cities
Lawrenceville, New Jersey
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Oct 23, 2026, 9:26 PM EDT
Completed Phase 2 Interventional

Comparison of Anti HIV Drugs Used Alone or in Combination With Cytosine Arabinoside to Treat Progressive Multifocal Leukoencephalopathy (PML) in HIV-Infected Patients

NCT00001048
View directory record Official record
Conditions
HIV Infections, Leukoencephalopathy, Progressive Multifocal
Interventions
Filgrastim, Cytarabine, Zidovudine, Zalcitabine, Didanosine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1997
U.S. locations
9
States / cities
Aurora, Colorado • Miami, Florida • Chicago, Illinois + 6 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2021 · Synced Oct 23, 2026, 9:26 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Long Term Immunity and Safety Following Vaccination With the JEV IC51 (IXIARO®, JESPECT®) in Pediatric Population In Non Endemic Countries. Uncontrolled, Ph3 FU-Study

NCT01246479
View directory record Official record
Conditions
Japanese Encephalitis
Interventions
Blood draw, IC51 has given in the parent study IC51-322
Procedure · Biological
Lead sponsor
Valneva Austria GmbH
Industry
Eligibility
9 Months to 20 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Mar 18, 2020 · Synced Oct 23, 2026, 9:26 PM EDT
Completed No phase listed Observational Results available

Evaluation of Moderate to Severe Influenza Outcomes in Children

NCT02979626
View directory record Official record
Conditions
Influenza, Otitis Media, Lower Resp Tract Infection, Encephalitic Infection, Myositis Viral, Fever
Interventions
Respiratory nasal swab
Procedure
Lead sponsor
University of Colorado, Denver
Other
Eligibility
6 Months to 8 Years
Enrollment
1,478 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
2
States / cities
Aurora, Colorado • Broomfield, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 4, 2021 · Synced Oct 23, 2026, 9:26 PM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Venezuelan Equine Encephalitis Monovalent Virus-Like Particle Vaccine

NCT03776994
View directory record Official record
Conditions
Encephalitis, Encephalitis, Viral, Infectious Encephalitis, Virus Diseases, Encephalomyelitis, Venezuelan Equine, Brain Diseases, Central Nervous System Diseases, Central Nervous System Viral Diseases, Alphavirus Infections, Togaviridae Infections, RNA Virus Infections, Central Nervous System Infections, Encephalomyelitis, Physiological Effects of Drugs, Vaccines, Encephalomyelitis, Equine, Nervous System Diseases
Interventions
Vaccinations on Day 0, Day 28, and Day 140
Biological
Lead sponsor
SRI International
Industry
Eligibility
18 Years to 50 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Plymouth, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 23, 2021 · Synced Oct 23, 2026, 9:26 PM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Safety and Immunogenicity Study of the Venezuelan Equine Encephalomyelitis Vaccine

NCT00582504
View directory record Official record
Conditions
Venezuelan Equine Encephalomyelitis
Interventions
VEE TC-83
Biological
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 65 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2022
U.S. locations
1
States / cities
Fort Deterick, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 11, 2021 · Synced Oct 23, 2026, 9:26 PM EDT
Completed No phase listed Observational

Safety Surveillance After Immunization With IXIARO

NCT01335412
View directory record Official record
Conditions
Japanese Encephalitis
Interventions
Japanese Encephalitis Virus vaccine, inactivated, adsorbed
Biological
Lead sponsor
Valneva Austria GmbH
Industry
Eligibility
17 Years and older
Enrollment
20,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Alexandria, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 10, 2015 · Synced Oct 23, 2026, 9:26 PM EDT
Completed Not applicable Interventional

A Pilot Study of Oral Clindamycin and Pyrimethamine for the Treatment of Toxoplasmic Encephalitis in Patients With AIDS

NCT00000674
View directory record Official record
Conditions
Toxoplasmosis, Cerebral, HIV Infections
Interventions
Pyrimethamine, Leucovorin calcium, Clindamycin
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1992
U.S. locations
13
States / cities
Los Angeles, California • Palo Alto, California • San Diego, California + 8 more
Source: ClinicalTrials.gov public record
Updated May 18, 2012 · Synced Oct 23, 2026, 9:26 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a West Nile Virus Vaccine (WN/DEN4-3'delta30) in Healthy Adults

NCT00094718
View directory record Official record
Conditions
West Nile Fever Encephalitis
Interventions
WN/DEN4-3'delta30, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
2
States / cities
Baltimore, Maryland • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 3, 2013 · Synced Oct 23, 2026, 9:26 PM EDT
Completed Not applicable Interventional Results available

Precision Diagnosis of Acute Infectious Diseases; Neuroinflammatory Cohort

NCT02910037
View directory record Official record
Conditions
Encephalitis, Meningitis
Interventions
mNGS for pathogen detection
Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
1 Minute to 110 Years
Enrollment
214 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
7
States / cities
Davis, California • Los Angeles, California • San Francisco, California + 3 more
Source: ClinicalTrials.gov public record
Updated May 27, 2021 · Synced Oct 23, 2026, 9:26 PM EDT
Completed Early Phase 1 Interventional

NT-I7, a Long-Acting Recombinant IL-7 Molecule, as an Immune Reconstitution Strategy for Lymphopenia in Patients With Progressive Multifocal Leukoencephalopathy

NCT04781309
View directory record Official record
Conditions
Progressive Multifocal Leukoencephalopathy
Interventions
NT-I7
Drug
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years to 120 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 18, 2025 · Synced Oct 23, 2026, 9:26 PM EDT
Completed No phase listed Observational

Tysabri Observational Cohort Study - Multiple Sclerosis (MS) Registries

NCT03399981
View directory record Official record
Conditions
Progressive Multifocal Leukoencephalopathy
Interventions
Tysabri
Biological
Lead sponsor
Biogen
Industry
Eligibility
Not listed
Enrollment
80,327 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 19, 2024 · Synced Oct 23, 2026, 9:26 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Unhide® Project: A Digital Health Platform to Collect Lifestyle Data for Brain Inflammation Research

NCT04806620
View directory record Official record
Conditions
Post-Acute COVID-19 Syndrome, ME/CFS, Rheumatic Arthritis, Juvenile Rheumatoid Arthritis (JRA), Psoriatic Arthritis (PsA), Ankylosing Spondylitis (AS), Autoimmune Encephalitis, Celiac Disease, Celiac Disease in Children, Chronic Lyme Disease, Post-treatment Lyme Disease Syndrome, Crohn's Disease, Dysautonomia, Anorexia Nervosa, Bulimia Nervosa, ARFID, Avoidant / Restrictive Food Intake Disorder, Ehlers Danlos Syndrome, Endometriosis, Fibromyalgia (FM), Long COVID, Lupus, Migraines, Mast Cell Activation Syndrome, Multiple Sclerosis, Myalgic Encephalomyelitis (ME), Myasthenia Gravis, Generalized, Myasthenia Gravis in Children, Narcolepsy, Obsessive Compulsive Disorder (OCD), PANDAS, Pediatric Acute-onset Neuropsychiatric Syndrome (PANS), POTS - Postural Orthostatic Tachycardia Syndrome, General Anxiety Disorder, Social Anxiety Disorder, PTSD - Post Traumatic Stress Disorder, Psoriasis, Traumatic Brain Injury, Tourette's Syndrome, Inflammatory Bowel Disease (IBD), Autoimmune Diseases, Neurological Diseases or Conditions, Psychiatric Disorder, Sjogren's Syndrome, Ulcerative Colitis and Crohn's Disease
Interventions
Not listed
Lead sponsor
Brain Inflammation Collaborative
Other
Eligibility
2 Years and older
Enrollment
10,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2030
U.S. locations
1
States / cities
Delafield, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Oct 23, 2026, 9:26 PM EDT