Half-Dose malaria vaccine could double protection for millions
NCT ID NCT07194668
First seen Jun 27, 2026 · Last updated Aug 05, 2026 · Updated 2 times
Summary
This study tests whether a half-dose of the R21/Matrix-M malaria vaccine is as effective as the full dose in 375 adults and adolescents aged 14 to 60. Participants will receive either the standard dose or a half-dose, and researchers will measure their immune response and safety. If successful, this could allow more people to be vaccinated with the same amount of vaccine, helping to prevent malaria more widely.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
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About 375 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Aug 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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14 to 60 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Residence in a study village for the study period, i.e. 12 months. * Age 14 years to 60 years. * Written informed consent/assent provided by participants (or a parent/guardian in case the participant is under 18 years old). Exclusion Criteria: * Pregnancy, plan to get pregnant within one month of vaccination, or breastfeeding. * Acute illness requiring intervention. * A history of an adverse reaction to study vaccine. * Prior receipt of any other malaria vaccine. * Enrolment in another intervention trial in the last month. * Planned enrolment in another intervention trial in the coming 12 months. * Regular use of Immunomodulating drugs e.g, Steroid, Methotrexate, Immunotherapy etc. in the past month and/or planned for the coming 12 months.
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Genom att skicka in godkänner du våra Användarvillkor
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
2 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Alikadam Upazila Health Complex
Bāndarban, Bāndarban, 4650, Bangladesh
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Lama Upazila Health Complex
Lāma, Lama, 4641, Bangladesh
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a Finger-Prick blood test reveal hidden malaria in the placenta?
- Can a digital assistant and quick tests stop unnecessary antibiotics for kids?
- Can scheduled malaria drugs shield infants from severe illness?
- Can a simple preventive drug cut malaria and anemia in infants?