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Review
. 2023 Sep;117(6):554-564.
doi: 10.1080/20477724.2022.2146049. Epub 2022 Nov 16.

Applicability of the Mexican ovitrap system for Aedes vector surveillance in Colombia

Eduardo Wright  1 , Maria Angelica Carrillo  1 , David Matamoros  2 , Rocío Cárdenas Sanchez  3 , Johanna Yañez  3 , Giusseppe Di Lorenzo  4 , Juan Manuel Villa  5 , Axel Kroeger  1
Affiliations
Review

Applicability of the Mexican ovitrap system for Aedes vector surveillance in Colombia

Eduardo Wright et al. Pathog Glob Health. 2023 Sep.

Abstract

Ovitraps can detect Aedes vectors at an early stage and can serve as an alarm indicator for outbreak prediction. This study aimed to summarize the available literature about the ovitrap system and to determine its feasibility, required resources and costs when installing and maintaining this vector surveillance system in the municipality of Los Patios, Colombia. A scoping review to assess the role of ovitraps as a tool for Aedes vector surveillance was conducted. The subsequent fieldwork consisted of mapping the municipality, manufacturing, and installing 40 ovitraps in 10 blocks, revising them weekly for 4 weeks by two half-time employed vector control technicians, and carrying out a cost analysis. A total of 38 studies were included in this review showing that ovitraps had a better performance than other entomological surveillance methods and a positive correlation with other entomological and disease variables. From the field results over 4 weeks, a high proportion of positive ovitraps (80%, 90%, 75%, 97.5%) and positive blocks (100%) as well as a good acceptance by house owners (76.9%), were identified. Operational indicators such as average installation time of the ovitraps (10h15 m), weekly reading and reinstallation (on average 7h27 m) and the cost of the intervention (COL$1,142,304.47/US$297) were calculated. Literature shows that ovitraps are sensitive to detect the presence of Aedes mosquitoes, providing data efficiently and timely for outbreak prediction. The field testing showed it is an affordable and feasible method in the context of a Colombian municipality and similar endemic areas.

Keywords: Ovitrap; Zika; chikungunya; dengue fever; vector surveillance; vector-borne disease.

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Conflict of interest statement

No potential conflict of interest was reported by the author(s).

Figures

Figure 1.
Figure 1.
Ovitraps for the intervention in Los Patios.
Figure 2.
Figure 2.
Spatial analysis of the map of Los Patios.
Figure 3.
Figure 3.
Schematic distribution of 40 ovitraps in 10 blocks following the Mexican ovitrap mod.
Figure 4.
Figure 4.
Geolocation of ovitraps in Los Patios.
Figure 5.
Figure 5.
Ovitrap installation sites.
Figure 6.
Figure 6.
The PRISMA flow diagram.
See this image and copyright information in PMC

References

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