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Innovative dengue vector control interventions in Latin America: what do they cost?

Authors:

Eduardo Alfonso-Sierra, César Basso, Efraín Beltrán-Ayala, Kendra Mitchell-
Foster, Juliana Quintero, Sebastián Cortés, Pablo Manrique-Saide, Guillermo
Guillermo-May, Andrea Caprara, Edilmar Carvalho de Lima & Axel Kroeger

 

Background:

Five studies were conducted in Fortaleza (Brazil), Girardot (Colombia), Machala (Ecuador), Acapulco
(Mexico), and Salto (Uruguay) to assess dengue vector control interventions tailored to the context. The studies
involved the community explicitly in the implementation, and focused on the most productive breeding places
for Aedes aegypti. This article reports the cost analysis of these interventions.


Methods:

We conducted the costing from the perspective of the vector control program. We collected data on
quantities and unit costs of the resources used to deliver the interventions. Comparable information was requested
for the routine activities. Cost items were classified, analyzed descriptively, and aggregated to calculate total
costs, costs per house reached, and incremental costs.


Results:

Cost per house of the interventions were $18.89 (Fortaleza), $21.86 (Girardot), $30.61 (Machala), $39.47
(Acapulco), and $6.98 (Salto). Intervention components that focused mainly on changes to the established vector
control programs seem affordable; cost savings were identified in Salto (−21%) and the clean patio component
in Machala (−12%). An incremental cost of 10% was estimated in Fortaleza. On the other hand, there were also
completely new components that would require sizeable financial efforts (installing insecticide-treated nets in
Girardot and Acapulco costs $16.97 and $24.96 per house, respectively).


Conclusions:

The interventions are promising, seem affordable and may improve the cost profile of the established
vector control programs. The costs of the new components could be considerable, and should be assessed in
relation to the benefits in reduced dengue burden.

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