Den här översättningen är inte klar ännu. Den här sidan är just nu på engelska.

Gå till den engelska sidan

Mosquito bites as a research tool: can scientists reproduce malaria infection on demand?

NCT ID NCT07816497

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Sep 11, 2026 · Last updated Sep 11, 2026

Summary

Researchers in Lambaréné, Gabon, want to see if they can safely and reliably infect healthy adult volunteers with malaria using bites from local Anopheles gambiae mosquitoes carrying a local strain of Plasmodium falciparum. The team raises the mosquitoes in the lab, feeds them malaria-infected blood from a local donor, and then lets them bite volunteers. After exposure, participants are checked daily for malaria parasites and treated with standard antimalarial drugs if they test positive or develop symptoms. The goal is to build a controlled human malaria infection model that reflects the parasites circulating in this part of Africa, which could help test future vaccines and drugs.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Controlled human malaria infection using bites from Anopheles gambiae mosquitoes carrying a local strain of Plasmodium falciparum
What this could lead to
If it works, this could give researchers in Gabon a local, African-based system for testing malaria vaccines and drugs against the exact parasite strains circulating there.
What could go wrong
The trial is small and early-stage, and it may not reliably infect enough volunteers to be useful. Participants are deliberately exposed to malaria and could develop symptoms, though the team monitors them daily and treats any infection promptly.

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

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

20 people

The number who actually took part.

Started

Jul 2025

Finished

Feb 2026

Lead sponsor

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

18 to 45 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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: * Healthy, adult volunteers aged 18 to 45 years old * Tympanic body temperature \< 37.5°C * Residence in Lambaréné or surroundings for the period of the trial * History of long-term residence (at least 5 years) in Gabon * Willingness to take two curative anti-malarial regimens * Reachable (24/7) by mobile phone during the CHMI and follow-up * A body mass index \<35 Exclusion Criteria: * Haemoglobin level \< 11 g/dl for female volunteers and \< 11.5 g/dl for male volunteers * Receipt of an investigational product in the 30 days preceding enrolment, or planned receipt during the study period * Prior receipt of an investigational malaria vaccine * Immunization with more than 3 other vaccines within the past month. * Positive for hepatitis B surface antigen (HBs-antigen) * Seropositive for hepatitis C virus (antibodies to HCV). * Positive HIV test * Abnormal level of transaminase (ALAT, ASAT) * Have been treated for malaria disease with an antimalarial drug or an antibiotic active on malaria parasites over the previous 28 days of the inoculation. * Any confirmed or suspected immunosuppressive or immunodeficient state, asplenia, recurrent, severe and chronic (more than 14 days) infections, immunosuppressant medication within the past 6 months (inhaled and topical steroids are allowed). * Use of immunoglobulins or blood products within 3 months prior to enrolment. * Sickle cell disease or any clinically relevant blood disorder. * History of a serious psychiatric condition that may affect participation in the study. * Positive urine pregnancy test or breastfeeding * Any other serious chronic illness requiring hospital specialist supervision * Suspected or known current alcohol abuse as defined by an alcohol intake of greater than 60 g per day. * Suspected or known injecting drug abuse in the 5 years preceding enrolment. * Contraindications to the use of the first-line anti-malarial medications: artemether/lumefantrine or atovaquone/proguanil. * Subjects unable to be closely followed for social, geographic or psychological reasons. * Any clinically significant abnormal finding on biochemistry or haematology blood tests, urine analysis or clinical examination. * History of seizure. * Any other significant disease, disorder or finding which, in the opinion of the Investigator, may significantly increase the risk to the volunteer because of participation in the study, affect the ability of the volunteer to participate in the study or impair interpretation of the study data.

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Malaria (plasmodium falciparum) are added.

Vår säkerhetsrekommendation!

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.

Contacts and locations

Locations

  • Centre de Recherches Médicales de Lambaréné

    Lambaréné, Moyen-Ogooué Province, 242, Gabon

More trials for these conditions

Other studies related to the condition(s) this trial covers.