AzTrials
AzTrials

MalariaPhase 3URCTNCT02938975

Field Efficacy Of Insecticide Treated Uniforms And Skin Repellents for Malaria Prevention

A Phase 3 study testing Ultra 30 Insect Repellent Lotion (30% Lipo DEET), Permethrin Factory-Treated Army Combat Uniforms and Army combat uniform in people with Malaria, run by Ifakara Health Institute at 1 site in Tanzania.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
Search all trials

Trial summary

Purpose While there is strong evidence that permethrin treated clothing prevents insect bites there is insufficient evidence from trials to demonstrate a reduction in infections. The evidence that topical insect repellants prevent malaria is more robust, but studies in civilian suffer from poor compliance. Read more about this study

Who is it for?
Ages 18 to 40 yearsHealthy volunteers can take part
Conditions the study is for
Malaria
What is being tested?
Ultra 30 Insect Repellent Lotion (30% Lipo DEET), Permethrin Factory-Treated Army Combat Uniforms and Army combat uniform
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
1,500 participants
Where
1 siteTanzania
Study dates
Nov 2017to Jun 2019
Phase
Phase 3
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 40 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Member of a platoon passes physical examination - no underlying health risks females that are not pregnant malaria negative at enrolment consents to participate

Who cannot join

  • Not assigned to a platoon underlying health risks - does not pass physical examination pregnant female (pregnant females are not recruited into the army) malaria positive at enrolment does not consent to participate

Trial locations and contacts

1 site in 1 country.

Sarah J Moore, PhD contact

+255764802622

smoore@ihi.or.tz

Daniel F Msellemu, MSc contact

dmsellemu@ihi.or.tz

Tanzania1 site
  • Ifakara Health Institute

    Bagamoyo, 74

    Mercy Nyika, +255788-720602, mnyika@ihi.or.tz

    Sarah J Moore, PhD

Other trials in Tanzania

About this study

Official title: Field Efficacy Of Insecticide Treated Uniforms And Skin Repellents To Reduce Malaria Incidence In Military Personnel On Active Duty In Regions Of Hyperendemicity

Purpose

While there is strong evidence that permethrin treated clothing prevents insect bites there is insufficient evidence from trials to demonstrate a reduction in infections. The evidence that topical insect repellants prevent malaria is more robust, but studies in civilian suffer from poor compliance. It is not known if there is an added benefit from combining the two. The effectiveness of permethrin-treated uniforms with and without DEET lotion are compared in a 2x2 design in Mgambo Jeshi la Kujenga Taifa (JKT) military camp in Tanga region.

Read more

The four arms are: 1) combined intervention group receiving permethrin treated uniform (PTU) and 30% DEET (diethyl toluamide) liposome formula; 2) permethrin intervention group receiving PTU and placebo lotion; 3) DEET intervention group receiving untreated army combat uniform (ACU) and 30% DEET liposome formula; 4) placebo group receiving untreated ACU and placebo lotion. Both participants and investigators will be blinded to treatment allocation.

The outcome measure is the incidence of Plasmodium falciparum malaria infection measured by Polymerase Chain Reaction every month by active case detection.

Read the detailed description

The study is a prospective, cluster-randomised placebo controlled trial using a 4-arm non-inferiority design with 12 months of follow-up. Healthy recruits of the Tanzanian National Service Program JKT Mgambo Camp will be enrolled in the trial. The recruits come from all over Tanzania. The transmission in the camp is relatively high: the incidence of malaria infection in Mgambo camp among recruits in the last quarter of 2014 was 0.68 per person per year measured by RDT.

One thousand five hundred recruits will be enrolled in the trial. Randomisation will be based on combania (the company, comprising typically 30-50 recruits). Recruits in a combania perform all activities together as a group. The randomisation will be unequal since the investigators expect that the primary comparison requiring the greatest precision is that of adding DEET lotion to PTU. Investigators will randomise 500 recruits for each arm of the primary comparison (PTU plus DEET, PTU uniform only) and 250 recruits to each of DEET only and placebo.

Compliance will be maximised by requesting participants to use their uniforms and lotions only at night. Monitoring of uniform use will be conducted by random spot checks of participants in the evenings by study staff. In addition, bottles of lotion will be weighed on a monthly basis during active case detection as a direct measure of compliance with lotion use.

Artemether-lumefantrine (Co-Artem) will be given to any participant with a temperature of ≥37.5 degrees centigrade or a history of fever in the past 48h, and P. falciparum parasites detected by RDT in the absence of other detectable cause of fever.

The participants' activities for the previous two weeks will be recorded by questionnaire by study staff during active case detection. Time away from the camp or in the sick bay and prophylactic periods in the case of antimalarial treatment will be excluded from time at risk.

Soldiers are a vulnerable group because they have limited ability to protect their own interests. It is therefore, particularly important that they should be prevented from being involved in the research project because they feel it is their duty to do so or that they may be subject to penalty from senior members of the army. Therefore, in order to protect the soldiers from coercion the ethical review process for the research is conducted the same processes procedure as is required by a civilian Institutional Review Board (IRB). In addition, service members' commanders or supervisors may not be in the room during the consent process. It will be stressed to Tanzania People's Defence Force (TPDF) staff performing spot checks that they are merely to monitor compliance and should not coerce participants into wearing their uniforms when in the barracks

Conditions
Malaria
Being tested
Ultra 30 Insect Repellent Lotion (30% Lipo DEET), Permethrin Factory-Treated Army Combat Uniforms, Placebo lotion, Army combat uniform
Keywords
malaria, personal protection, permethrin treated clothing, insect repellents, army personnel, cluster randomised trial
Medical subject headings
Malaria

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Ultra 30 Insect Repellent Lotion (30% Lipo DEET)Other

    One application of Lipo DEET protects for up to 12 hours and has a pleasant odour and non-greasy "feel" on the skin. DEET is a broad spectrum insect repellent and was selected this study because it has been extensively tested for safety and toxicity for human use and its efficacy against a broad variety of arthropod vectors. DEET was first registered in 1957 and has been conclusively proven to be safe for use on adults, children, pregnant and lactating mothers.

    This Liposome-based repellent is the newest advancement in insect repellent technology. The Liposome envelops the active ingredient, DEET, and slowly time-releases it as needed, thereby extending the effectiveness of the repellent and reducing dermal absorption.

  • Permethrin Factory-Treated Army Combat UniformsOther

    Permethrin is the U.S., Australian and United Kingdom (UK) military's standard repellent for application to fabric and is considered the most effective clothing treatment available to prevent insect bites through fabric. The Army objective is to provide 90% bite protection for at least 50 launderings; an objective easily met through factory treatment of uniforms, which demonstrates 99-100% bite protection up to 50 launderings (the expected lifetime of the uniform).

  • Placebo lotionOther

    A liposome lotion with no DEET

  • Army combat uniformOther

    Army combat uniform with no permethrin

Study groups in NCT02938975
Study groupRoleWhat they receive
PlaceboPlacebo comparatorplacebo group receiving untreated army combat uniform and placebo lotion. Assigned interventions: Placebo lotion - a liposome lotion with no DEET Army combat uniform - army combat uniform with no permethrin
Receives: Other: Placebo lotion; Other: Army combat uniform
ComboActive comparatorCombined intervention group of receiving Permethrin treated uniform 0.52% w/w and 30% DEET liposome formula. Ultra 30 Insect Repellent Lotion (30% Lipo DEET) One application of Lipo DEET protects for up to 12 hours. DEET is a broad spectrum insect repellent that has been extensively tested for safety and toxicity for human use and its efficacy against a broad variety of arthropod vectors. Permethrin Factory-Treated Army Combat Uniforms treated by the military apparel contractor Warmkraft Permethrin is considered the most effective clothing treatment available to prevent insect bites through fabric. The Army objective is to provide 90% bite protection for at least 50 launderings.
Receives: Other: Ultra 30 Insect Repellent Lotion (30% Lipo DEET); Other: Permethrin Factory-Treated Army Combat Uniforms
PermethrinActive comparatorpermethrin intervention group receiving Permethrin treated uniform 0.52% w/w and placebo lotion. Permethrin Factory-Treated Army Combat Uniforms treated by the military apparel contractor Warmkraft Placebo lotion: liposome lotion with no DEET
Receives: Other: Permethrin Factory-Treated Army Combat Uniforms; Other: Placebo lotion
DEETActive comparatorDEET intervention group receiving untreated army combat uniform and 30% DEET liposome formula. Ultra 30 Insect Repellent Lotion (30% Lipo DEET) Army combat uniform with no permethrin
Receives: Other: Ultra 30 Insect Repellent Lotion (30% Lipo DEET); Other: Army combat uniform

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Incidence of Plasmodium falciparum malaria through monthly measurement of malaria positivity by direct polymerase chain reaction (PCR) to detect parasite DNA

    Blood spots will be collected on Whatman 3 filter paper and processed for PCR detection of parasites

    Measured: Monthly active case detection for 12 months

Secondary outcomes (3)
  1. Incidence of clinical malaria through monthly measurement malaria positivity of SD Bioline Malaria Rapid Diagnostic Test to test for parasite antigen

    Both active and passive malaria case detection will be taken by malaria RDT (SD Bioline Malaria Incidence of RDT positivity Participants will be tested for malaria every month using Rapid Diagnostic Test (RDT) SD Bioline Malaria Antigen Pf/Pan (SD RDT) with RDT results interpreted by the Deki Reader device.

    Measured: Active and passive case detection for 12 months

  2. Compliance with intervention as measured through spot checking and weighing of repellent bottles

    Each month bottles of repellent or placebo lotion will be weighed to measure application of repellent. Compliance with uniforms will be observed by spot checks once a month.

    Measured: Monthly assessment of intervention compliance with uniforms and lotions provided for 12 months

  3. Protective efficacy of uniforms measured by reduction in Anopheles arabiensis bites among those wearing uniforms for a sub-sample of uniforms tested under laboratory conditions with free flying mosquitoes

    A random sample of 100 uniforms will be tested in the laboratory at the end of the study to measure their efficacy in preventing mosquito bites.

    Measured: After 12 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted19 Oct 2016 (estimated)
  2. Study startNov 2017 (estimated)
  3. Primary completionJan 2019 (estimated)
  4. Study completionJun 2019 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
1,500 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02938975
Sponsor's protocol ID
BIT014 PR001 V01
Acronym
URCT
Status last verified
Jun 2017
First submitted
5 Aug 2016
Last updated
6 Jun 2017
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No

Publications

  • Msellemu D, Ross A, Temu L, Moshi I, Hofer L, Mwanziva C, Kohi YM, Moore SJ. Effect of interventions to reduce malaria incidence among military personnel on active duty: study protocol for a cluster randomised controlled trial of the impact of etofenprox-treated uniforms, permethrin-treated uniforms and DEET insect repellent. Trials. 2021 Nov 21;22(1):825. doi: 10.1186/s13063-021-05801-9.

    PubMed 34802455

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Ultra 30 Insect Repellent Lotion (30% Lipo DEET), Permethrin Factory-Treated Army Combat Uniforms and Army combat uniform in people with Malaria, run by Ifakara Health Institute at 1 site in Tanzania.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 6 Jun 2017. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Tanzania. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

Contact Sarah J Moore, PhD (+255764802622, smoore@ihi.or.tz), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Incidence of Plasmodium falciparum malaria through monthly measurement of malaria positivity by direct polymerase chain reaction (PCR) to detect parasite DNA (time frame: Monthly active case detection for 12 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02938975, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Jun 2017.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in
URCT Clinical Trial NCT02938975 | AzTrials