Quantifying the potential value of entomological data collection for programmatic decision-making on malaria control in sub-Saharan African settings.

Publisher: BioMed Central Country of Publication: England NLM ID: 101139802 Publication Model: Electronic Cited Medium: Internet ISSN: 1475-2875 (Electronic) Linking ISSN: 14752875 NLM ISO Abbreviation: Malar J Subsets: MEDLINE

Original Publication: London : BioMed Central, [2002-

Mosquito Control*/methods ; Mosquito Control*/economics ; Cost-Benefit Analysis* ; Malaria, Falciparum*/prevention & control; Africa South of the Sahara ; Humans ; Animals ; Data Collection/methods ; Decision Making ; Models, Theoretical ; Entomology/methods

Background: The availability of many tools for malaria control leads to complex decisions regarding the most cost-effective intervention package based on local epidemiology. Mosquito characteristics influence the impact of vector control, but entomological surveillance is often limited due to a lack of resources in national malaria programmes.
Methods: This study quantified the monetary value of information provided by entomological data collection for programmatic decision-making using a mathematical model of Plasmodium falciparum transmission. The 3-year impact and cost of various intervention packages was simulated in different sub-Saharan African settings, including combinations of scaling-up insecticide-treated nets (ITN), switching to next-generation ITNs, and a treatment and prevention package. The DALYs averted and their net monetary benefit were compared at different cost-effectiveness thresholds and the value of resolving uncertainty in entomological model parameters was calculated.
Results: Across transmission settings and at cost-effectiveness thresholds over US$170 per DALY averted, the most cost-effective intervention package was switching to and scaling up pyrethroid-pyrrole ITNs combined with the treatment and prevention package. The median expected value of perfect information on the entomological indicators was US$0.05 (range 0.02-0.23) and US$0.17 (range 0.09-1.43) per person at risk at thresholds of US$75 and US$1000 per DALY averted, respectively. This represented less than 2% of the net monetary benefit of implementing the most cost-effective intervention package. Value of information estimates at cost-effectiveness thresholds over US$250 were higher than current investments into entomological monitoring by the US President's Malaria Initiative.
Conclusions: These results suggest that entomological data collection should not delay implementation of interventions with demonstrated efficacy in most settings, but that sustained investments into and use of entomological surveillance are nevertheless worthwhile and have broad value to national malaria programmes.
Competing Interests: Declarations. Ethics approval and consent to participate: Not applicable. Consent for publication: Not applicable. Competing interests: The authors declare no competing interests.
(© 2025. The Author(s).)

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MR/X020258/1 MRC Centre for Global Infectious Disease Analysis; OPP1200155 Bill and Melinda Gates Foundation; 220900/Z/20/Z United Kingdom WT_ Wellcome Trust; MR/T041986/1 United Kingdom MRC_ Medical Research Council; United Kingdom WT_ Wellcome Trust

Keywords: Entomological surveillance; Health economics; Malaria; Mathematical modelling

Date Created: 20250130 Date Completed: 20250131 Latest Revision: 20250204

20250204

PMC11780794

10.1186/s12936-025-05251-7

39885514