Scientists study mosquito saliva to predict malaria and dengue risk
NCT ID NCT04478370
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at how people's immune systems react to proteins in mosquito saliva after being bitten. Researchers exposed 147 healthy adults in Thailand to lab-grown mosquitoes that can carry malaria or dengue. The goal was to find markers in the blood that show how much exposure a person has had to these mosquitoes, which could help predict disease outbreaks and test mosquito control methods.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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147 people
The number who actually took part.
- Started
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Jan 2021
- Finished
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Jul 2025
- 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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18 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: * Healthy male or female participant judged by a responsible physician with no abnormality identified on a medical evaluation; * Thai, Burmese or Karen ethnicity; * Aged ≥ 18 to \<60 years old; * Living in Mae Sot city for the last 12 months; * Willing to participate in the activity and able to give informed consent for participating in the study; * Able to tolerate direct mosquito exposure. Exclusion Criteria: * History of travel in a malaria endemic are (rural village) in the last 12 months, or plan to do so during the study; * Medication or condition deemed to interfere with the outcome measure by a responsible physician; * Moderate and severe anemia (haemoglobin concentration less than 110 g/L of blood); * Hypersensitivity or anaphylaxis to mosquito bites; * Pregnant women
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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
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Shoklo Malaria Research unit (SMRU)
Mae Sot, Changwat Tak, 63110, Thailand
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Other studies related to the condition(s) this trial covers.
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