How important are holes and insecticide...

In the News

IHI wins Grand Challenges Explorations grant

Dar es Salaam. Ifakara Health Institute (IHI) is a Grand Challenges Explorations winner, an initiative funded by the Bill & Melinda Gates Foundation.  Ms. Zawadi Mageni, a Research Scientist at …

IHI partners support Ifakara women group

Ifakara Health Institute (IHI) partners at the Innovative Vector Control Consortium (IVCC), Jed Stone and Christopher Larkin, recently distributed 300 conference bags made of cotton from the Ifakara Women’s Weavers …

Recent Projects

Understanding and enhancing approaches to quality improvement in small and medium sized private facilities in sub-Saharan Africa

This is an evaluation study that IHI is conducting in collaboration with London school of hygiene and tropical medicine. The research takes place in the context of an innovative intervention …

Vaccine Delivery Costing Study

As countries drive towards achieving high and equitable coverage of life-saving vaccines, the availability of sustainable, equitable, and predictable financing for vaccine delivery is essential. Over the last two decades, …

Determining the effect of holes of different sizes and varying concentrations of insecticide in bednets on personal and community protection using pyrethroid resistant Anopheles gambiae sensu stricto and pyrethroid susceptible Anopheles arabiensis

The WHO 2013Guidance Notes for Estimating the Longevity of Long-Lasting Insecticidal Nets in Malaria Control” set several priorities for operational research. In response to this guidance we are carrying out a controlled study in the semi-field to understand the determinants of net entry for partially resistant and highly resistant (30% an 70% survival to exposure with discriminating dose of deltamethrin) Anopheles arabiensis. The following outcome variables are measured with nets with different holes and insecticidal concentrations: 1) Personal protection to the user, 2) Overall insecticidal effect that will protect all members of the community, and 3) Predicted proportion reduction in entomological inoculation rate (EIR).

Lead scientists:

Sarah Moore

Adam Saddler


Tulane University
Swiss Tropical and Public Health Insitute


Project Management Institute (PMI)

Projects Location

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