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Three-arm Cluster Randomised Control Trial Evaluation of Guardian Spatial Emanator as a Complimentary Vector Control Tool in Papua New Guinea (WinMal)

WinMal Trial: Spatial Emanator Deployment Strategies for Malaria Control in Papua New Guinea

Malaria cases are increasing in Papua New Guinea, partly because insecticide-treated nets do not fully protect people, especially from mosquitoes that bite outdoors. Spatial emanators are new devices that release insecticide into the air to repel or kill mosquitoes. This study will test whether these devices reduce malaria infections in rural villages in Madang Province by comparing households using indoor or outdoor devices with those without them. The results will help guide national malaria control strategies.

Visão geral do estudo

Status

Ainda não está recrutando

Condições

Intervenção / Tratamento

Descrição detalhada

The WinMal trial is a large-scale cluster randomised control trial investigating whether spatial emanators reduce transmission of malaria infections. The study is being conducted with 150 rural villages in Bogia, Sumkar, Madang and Rai Coast districts of Madang Province, Papua New Guinea.

The trial will address the question: 'Do Guardian spatial emanators reduce malaria transmission when deployed in protected outdoor spaces or inside houses in PNG?'

The trial will evaluate the effectiveness, acceptability and feasibility of Guardian SE deployed indoors and outdoors for malaria prevention in PNG.

The WinMal trial will provide evidence to guide PNG National Department of Health decisions on how spatial emanators could be deployed alongside ITNs to address gaps in protection from outdoor biting.

Tipo de estudo

Intervencional

Inscrição (Estimado)

4350

Estágio

  • Não aplicável

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

Locais de estudo

    • Madang Province
      • Madang, Madang Province, Papua Nova Guiné
        • Sumkar, Bogia, Rai Coast and Madang Districts of Madang Province, Papua New Guinea

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

9 anos a 14 anos (Filho)

Aceita Voluntários Saudáveis

Sim

Gêneros Elegíveis para o Estudo

Tudo

Descrição

Inclusion Criteria:

  • Children aged 9-14 years at enrolment
  • Sleeps in a household within allocated cluster >90% of the nights during any given month

Exclusion Criteria:

  • Dissent (by child) to participate in the study
  • No parental consent provided through the signing of informed consent form
  • Unwillingness to take G6PD-guided radical cure treatment at enrolment with no previous ADRs to AL or PQ
  • Plans for extended travel (>2 weeks) outside of household/cluster during the study
  • G6PD activity ≤6.0 U/g Hb at screening
  • Measured baseline of ≤8 mg/dL or who have signs of clinical decompensation
  • Participating or planning to participate in another clinical trial investigating a drug, vaccine, medical device, or procedure during the study period
  • Currently taking malaria prophylaxis

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Prevenção
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Nenhum (rótulo aberto)

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: Outdoor intervention arm

Guardian spatial emanators deployed in protected outdoor spaces, households will continue to use ITNs as per routine National Malaria Control Program

Guardian spatial emanators deployed in protected outdoor spaces

Experimental: Indoor intervention arm

Guardian spatial emanators deployed inside houses, households will continue to use ITNs as per routine National Malaria Control Program

Guardian spatial emanators deployed inside houses

Sem intervenção: Control arm

No spatial emanators deployed, households will continue to use ITNs as per routine National Malaria Control Program

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Effectiveness of Guardian Spatial Emanator
Prazo: 12 months

Time to first Plasmodium spp. infection detected by PCR at monthly follow-up visits or symptomatic ad-hoc visit between follow-ups over the 12-month intervention period in cohort participants from the core of the clusters.

12 months

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Effectiveness of Guardian Spatial Emanator
Prazo: 12 months

Time to first PCR-confirmed P. falciparum infection over the 12 months of follow-up.

Time to first PCR-confirmed P. vivax infection over the 12 months of follow-up.

12 months
Effectiveness of Guardian Spatial Emanator
Prazo: 6 months

Time to first PCR-confirmed Plasmodium spp infection over the first 6 months of follow-up.

Time to first PCR-confirmed P. falciparum infection over the first 6 months of follow-up.

Time to first PCR-confirmed P. vivax infection over the first 6 months of follow-up.

6 months
Effectiveness of Guardian Spatial Emanator
Prazo: 12 months

Incidence of PCR-confirmed Plasmodium spp infections (first-time & recurrent together) in first 6m & full 12m.

Incidence of PCR-confirmed Pf infections (first-time & recurrent together) in first 6m & full 12m.

Incidence of PCR-confirmed Pv infections (first-time & recurrent together) in first 6m & full 12m Incidence of clinical episodes of malaria (first-time & recurrent together) in first 6m & full 12m Incidence of Pf clinical episodes of malaria (first-time & recurrent together) in first 6m & full 12m Incidence of Pv clinical episodes of malaria (first-time & recurrent together) in first 6m & full 12m Incidence of new Pf blood stage infections (molecular force of blood-stage infection - Pf molFOB) in first 6m & full 12m Incidence of new Pv blood stage infections (molecular force of blood-stage infection - Pv molFOB) in first 6m & full 12m Incidence of new blood stage infections (molecular force of blood-stage infection for Pf and Pv molFOB combined) in first 6m & full 12m

12 months
Difference between indoor and outdoor arms
Prazo: 12 months

Time to first Plasmodium spp. infection detected by PCR at monthly follow-up or symptomatic ad-hoc visit between follow-ups visits over the 12-month intervention period in cohort participants from the core of the clusters.

12 months
Sensitivity of the estimates for epidemiological outcomes
Prazo: 12 months

Spillover-adjusted estimates of intervention effectiveness for epidemiological endpoints, incorporating data from cluster buffer zone participants.

12 months
Anopheles species composition
Prazo: 12 months

Anopheles species composition in a subset of clusters, in the pre-deployment baseline period and at the end of the intervention.

12 months
Presence of insecticide resistance mutations
Prazo: 12 months

Prevalence of insecticide resistance markers in a subset of clusters in the pre-deployment baseline period and at the end of the intervention.

12 months
Acceptability of spatial emanators
Prazo: 12 months

Qualitative outcomes from Photovoice methodology, and associated focus group discussions with community members, followed by thematic analysis of drivers of behaviour change, barriers and enablers of spatial emanator acceptance and consistent use.

12 months
Feasibility of spatial emanators
Prazo: 12 months

Qualitative outcomes from key informant interviews with key study staff and health system stakeholders at district, provincial, and national level followed by descriptive summary of barriers and enablers to distribution, implementation & scale-up.

12 months
Cost effectiveness of Guardian spatial emanators
Prazo: 12 months

The costs of deploying spatial emanators (either indoor or outdoor) and the incremental cost-effectiveness ratios when compared with current practice.

12 months
Self-reported adverse events
Prazo: 12 months

Incidence of self-reported adverse events (AEs) and/or serious adverse events (SAEs) assessed as possibly or likely related to Guardian spatial emanators among cohort participants (through monthly follow-up) and wider community through passive surveillance.

12 months
Coverage, attrition and re-location of spatial emanators
Prazo: 12 months

Proportion of households with emanators in place at scheduled monitoring visits, the attrition rate per cluster per scheduled monitoring visit period, timing of redistribution events recorded per cluster.

12 months
Transfluthrin quantity, installation environment and bioefficacy
Prazo: 12 months

Mass percent transfluthrin retained in the spatial emanators related to installation environment and bioefficacy measure/s (e.g., knock down and mortality of colony mosquitoes exposed to spatial emanators).

12 months

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Colaboradores

Investigadores

  • Investigador principal: Leanne Robinson, MPH PhD, Burnet Institute
  • Investigador principal: Moses Laman, MBBS PHD, Papua New Guinea Institute of Medical Research
  • Investigador principal: Stephan Karl, PhD, James Cook University, Queensland, Australia
  • Investigador principal: Jacob Kisomb, MBBS, National Department of Health, Papua New Guinea
  • Investigador principal: Maria Ome-Kaius, MBBS PhD, Papua New Guinea Institute of Medical Research

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Estimado)

1 de fevereiro de 2027

Conclusão Primária (Estimado)

1 de outubro de 2028

Conclusão do estudo (Estimado)

1 de dezembro de 2028

Datas de inscrição no estudo

Enviado pela primeira vez

27 de outubro de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

27 de outubro de 2026

Primeira postagem (Real)

3 de novembro de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

3 de novembro de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

27 de outubro de 2026

Última verificação

1 de outubro de 2026

Mais Informações

Termos relacionados a este estudo

Outros números de identificação do estudo

  • NATNAT WinMal cRCT

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

SIM

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .