Low-cost Treated Wall Hangings for Indoor Use

Testing Treated Net Hung Indoors to Prevent Mosquito-Human Contact - A Fast, New Intervention and an Innovative Method of Evaluation

Organization: QIMR Berghofer Medical Research Institute

Location: Brisbane, Queensland, Australia

Problem: The re-introduction of Indoor Residual Spraying (IRS) for emergency Zika control is strongly supported by the WHO with the provision that it must be methodically applied and achieve high household coverage. IRS, however, is time-consuming, expensive, and dependent on specialized human resources. Issues of community compliance and failure to reach threshold coverage requirements are further constraints to its effective implementation.

Solution: A treated net impregnated with metofluthrin, which maintains efficacy for a three-week period. Small units of net, or emanators, are hung indoors and create protected zones that prevent mosquito-human contact. These devices have a powerful effect on mosquito behaviour and can prevent all biting within a 3-8 meter radius in urban indoor spaces. They also cause knock down and death in the mosquito population. This tool - a community-friendly, fast, effective insecticide formulation that breaks contact between mosquitoes and humans - is also effective against existing pyrethroid-resistant populations of Ae. aegypti. A successful proof of impact of the metofluthrin emanators will increase our capacity to combat a number of urban arboviruses, including Zika.


Headshot of Greg Devine

Greg Devine – Project Coordinator, Mosquito Control Laboratory, QIMR Berghofer Medical Research Institute (Australia); PhD & M.Sc., in Applied Entomology, Imperial College (England); B.Sc. in Zoology, University of Aberdeen (Scotland)

Headshot of Gonzalo Vazquest-Prokopec

Gonzalo Vazquest-Prokopec – Assistant Professor, Emory University; PhD, M.Sc., and B.Sc., University of Buenos Aires (Argentina)

Headshot of Tom Churcher

Tom Churcher – Faculty, School of Public Health, Imperial College (England); PhD and M.Sc. in Epidemiology, Imperial College; B.Sc. in Biology, University of Manchester

Headshot of Scott Ritchie

Scott Ritchie – Professorial Research Fellow, James Cook University; PhD in Mosquito Ecology, University of Florida; M.Sc. and B.Sc. in Entomology, Iowa State University

Headshot of Pablo Manrique-Saide

Pablo Manrique-Saide – Universidad Autonoma de Yucatan (Mexico); PhD and M.Sc. in Medical Entomology, London School of Hygiene & Tropical Medicine; B.Sc., Universidad Autónoma de Yucatán (Mexico)

Primary motivation:

"…to demonstrate that a novel formulation of a volatile pyrethroid, deployed indoors against the mosquitoes that spread Zika, dengue and Chikungunya, can be used to create robust and reliable “bite-free” zones in treated households…If we can demonstrate the effectiveness of the emanators in urban environments, we will use those proofs to engage industry, the community and public health stakeholders in developing plans for operational deployment."

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