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Lassa Fever clinical trials and research
As of November 12, 2026, Find a Trial lists 4 Lassa Fever clinical trials that are recruiting, at sites in 4 countries (most in Nigeria (3), Liberia (2), Ghana (1)). By phase: Phase 2 (2), Phase 2/3 (1), Phase 1 (1). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 4Clinical trials
- 4Countries
Newest Lassa Fever clinical trials
| Study | Phase | Where | Status | Registered |
|---|---|---|---|---|
| MOPEVAC-Las vaccine in healthy adults to test safety and immune response for Lassa fever | Phase 1 | Paris | Recruiting | Sep 22, 2026 |
| Using Dexamethasone to Treat Lassa Fever | Phase 2 | Irrua, Edo | Recruiting | Jan 25, 2024 |
| New treatment options for hospitalized people with Lassa fever in West Africa | Phase 2/3 | Suacoco, Bong County and 3 other locations | Recruiting | Jan 18, 2024 |
| Lassa Fever Vaccine for Adults and Children in West Africa | Phase 2 | Accra and 2 other locations | Recruiting | May 22, 2023 |
All recruiting trials (4)
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MOPEVAC-Las vaccine in healthy adults to test safety and immune response for Lassa fever
A small study in healthy adults checks if MOPEVAC-Las is safe and can trigger an immune response, trying different dose levels.
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Using Dexamethasone to Treat Lassa Fever
This study is testing if adding dexamethasone to the standard treatment for moderate to severe Lassa fever can help patients feel better and recover more effectively.
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New treatment options for hospitalized people with Lassa fever in West Africa
This trial will try several antiviral and supportive drugs to see which works best to prevent death or organ failure in people hospitalized with confirmed Lassa fever.
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Lassa Fever Vaccine for Adults and Children in West Africa
This study is testing a new vaccine for Lassa fever in adults and children in West Africa to see if it's safe and effective at different doses.
Quick answers
How many Lassa Fever clinical trials are recruiting right now?
4, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 4 countries. The most sites are in Nigeria (3 trials), Liberia (2 trials), Ghana (1 trial), France (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 2: 2, Phase 2/3: 1, Phase 1: 1. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.