Project information

Achieving high coverage of conventional malaria control interventions remains a cornerstone of international policy for malaria control and, in many places with ongoing high endemic transmission, an essential precursor to subsequent elimination efforts. Previously, we developed a Bayesian compartment model that synthesised information on mosquito net deliveries, distributions and periodic coverage evaluations through household surveys. Using this model we generated national level spatiotemporal reconstructions of insecticide-treated net (ITN) coverage through time in Africa.

The main focus of our research is the extension of the ITN model to estimate national level reconstructions of indoor residual spraying (IRS), and the creation of high-resolution maps of both ITN and IRS coverage. These maps are currently being used to explore the efficiency of current ITN/IRS distributions relative to the underlying transmission intensity.

We work on understanding the impacts of ITN interventions in the presence of pyrethroid resistance, the benefit of new products with different types of insecticide and how we can use these tools in different ways to maximise their impact

Recent publications

Green N, Agossa F, Yovogan B, Oxborough R, Kitau J, Müller P, Constant E, Rowland M, Tchacaya EFS, Benjamin KG, Churcher TS, Betancourt M, Sherrard-Smith Eet al., 2022, An evidence synthesis approach for combining different data sources illustrated using entomological efficacy of insecticides for indoor residual spraying, PLoS One, Vol: 17, Pages: e0263446-e0263446, ISSN: 1932-6203

Sherrard-Smith E, Winskill P, Hamlet A, Ngufor C, N'Guessan R, Guelbeogo MW, Sanou A, Nash RK, Hill A, Russell EL, Woodbridge M, Tungu P, Kont MD, McLean T, Fornadel C, Richardson JH, Donnelly MJ, Staedke SG, Gonahasa S, Protopopoff N, Rowland M, Churcher TSet al., 2022, Optimising the deployment of vector control tools against malaria: a data-informed modelling study, The Lancet Planetary Health, Vol: 6, Pages: e100-e109, ISSN: 2542-5196

Martin JL, Messenger LA, Mosha FW, Lukole E, Mosha JF, Kulkarni M, Churcher TS, Sherrard-Smith E, Manjurano A, Protopopoff N, Rowland Met al., 2022, Durability of three types of dual active ingredient long-lasting insecticidal net compared to a pyrethroid-only LLIN in Tanzania: methodology for a prospective cohort study nested in a cluster randomized controlled trial., Malaria Journal, Vol: 21, Pages: 96-96, ISSN: 1475-2875

Nash et al 2021 Systematic review of the entomological impact of insecticide-treated nets evaluated using experimental hut trials in Africa. Current Research in Parasitology & Vector-Borne Diseases.1. 100047.

Marti-Soler H, et al 2021 Effect of wall type, delayed mortality and mosquito age on the residual efficacy of a clothianidin-based indoor residual spray formulation (SumiShieldTM 50WG) in southern Mozambique. PLoS ONE 16(8): e0248604.

Bertozzi-Villa, A., et al. 2021. Maps and metrics of insecticide-treated net access, use, and nets-per-capita in Africa from 2000-2020. Nat Commun 12, 3589

Bhatt, S. et al. Coverage and system efficiencies of insecticide-treated nets in Africa from 2000 to 2017. Elife 4, e09672 (2015). Publisher's link.