What question did this study set out to answer?

To assess the potential reduction in Plasmodium falciparum malaria transmission across diverse African settings using combinations of current and pipeline intervention strategies.

August 10, 2010PLoS MedicineOpen Access

Reducing Plasmodium falciparum Malaria Transmission in Africa: A Model-Based Evaluation of Intervention Strategies

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Authors

JGJamie T. GriffinUniversity of Antananarivo THT. Déirdre HollingsworthThe George Institute for Global Health LOLucy OkellImperial College London

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Implication

Simulation study demonstrates that combined interventions can eliminate malaria in moderate settings, highlighting that high-transmission zones require novel tools targeting outdoor mosquitoes.

Key Points

To assess the potential reduction in Plasmodium falciparum malaria transmission across diverse African settings using combinations of current and pipeline intervention strategies.
Developed an individual-based simulation model of P. falciparum incorporating three primary vector species (Anopheles gambiae s.s., An. arabiensis, and An. funestus), parameterized using prevalence data from 34 African transmission settings.
Evaluated an 80% coverage target across six representative settings varying by annual entomological inoculation rate (EIR: ~3, ~43, ~46, ~81, ~586, and ~675 infectious bites per person per year), seasonality, and vector composition.
Simulated interventions including long-lasting insecticide-treated nets (LLINs), indoor residual spraying (IRS) with DDT, mass screening and treatment (MSAT), artemisinin-combination therapy (ACT), and the RTS,S/AS01 vaccine.
In low-transmission settings (~3 infectious bites per person per year), sustained high LLIN usage alone has the potential to reduce parasite prevalence below 1% across all age groups.
In two moderate-transmission settings (EIR ~43 and ~81), adding IRS and MSAT reduced parasite prevalence below the 1% threshold, but failed in a setting (EIR = 46) dominated by outdoor-resting An. arabiensis.
In high-transmission settings (EIR ~586 and ~675), reducing prevalence below 1% required intervention coverage exceeding 90% or novel tools, though current tools achieved substantial overall transmission reductions.

Cite This Study

Griffin et al. (2010) studied this question.

synapsesocial.com/papers/69ff7f13413f0c047f2d6573 https://doi.org/10.1371/journal.pmed.1000324

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Implication

Simulation study demonstrates that combined interventions can eliminate malaria in moderate settings, highlighting that high-transmission zones require novel tools targeting outdoor mosquitoes.

Reducing Plasmodium falciparum Malaria Transmission in Africa: A Model-Based Evaluation of Intervention Strategies

Discussion

Member takes

Implication

Key Points

Cite This Study

Reducing Plasmodium falciparum Malaria Transmission in Africa: A Model-Based Evaluation of Intervention Strategies

Discussion

Member takes

Implication

Key Points

Cite This Study

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