Territorial analysis of Aedes aegypti distribution in two Colombian cities: a chorematic and ecosystem approach

Abstract

A territorial analysis of Aedes aegypti density was conducted in two Colombian cities using an ecosystem and chorematic approach. Entomological and behavioral data (by cluster) and information on the urban context were used to analyze the relationship between territorial structures and dynamics and vector density. The results were represented in graphic (chorematic) models. Arauca showed higher vector density than Armenia. Higher density was related to unplanned urbanization, flood-prone areas, low socioeconomic strata, household water tanks, higher temperature, and recall of control measures for adult mosquitos. Zones with low density indices coincided with diverse socioeconomic, ecological, and behavioral conditions. The study found a relationship between territorial structures and dynamics and vector density in both Arauca and Armenia, where the interaction between ecological and social systems shape areas with high and low A. aegypti density.

Space and space-time distributions of dengue in a hyper-endemic urban space: the case of Girardot, Colombia

“…Hence, the spatial dimension has been recognized as essential to better understand the transmission of diseases such as dengue [11]. Geography itself has played a role in this debate via the classical works of Maximilien Sorre [18] and, more recently, with analyses of dengue discussing how particular configurations of each urban space influence the spatial pattern of the disease [7, 15, 16, 19, 20]. …”

Arbovirus Vectors of Epidemiological Concern in the Americas: A Scoping Review of Entomological Studies on Zika, Dengue and Chikungunya Virus Vectors

“…aegypti by Overgaard et al [81], Hagenlocher et al [88] and Silva Lima et al [89]. Fuentes-Vallejo et al [90] compared Ae. aegypti density between two municipalities, and found high density to be associated with unplanned urbanization, flood-prone areas, low socioeconomic strata, household water tanks, high temperature, and lack of control measures for adult mosquitoes.…”

“…Low socioeconomic status and related factors, including poor infrastructure, inconsistent access to water, and high household resident density, have been consistently with arbovirus vector occurrence [73–76,90], suggesting that socioeconomic development may be an important means of vector-borne disease prevention.…”

Effectiveness of an intervention for Aedes aegypti control scaled-up under an inter-sectoral approach in a Colombian city hyper-endemic for dengue virus

“…aegypti has been reported as the principal dengue vector in Girardot [31,36] and in other dengue hyperendemic cities of Colombia (Girardot, Armenia, Arauca, Anapoima). The studies report vector productivity associated with storage of water in large and uncovered low level cement containers known as "albercas", which are estimated to account for more than 70% of pupae production [36][37][38].…”

“…The main reason for the limited coverage was the inaccessibility of participant houses, even after three visits. It is important to point out that Girardot is a touristic site and many of the houses are the "second residences" of inhabitants of other cities (primarily Bogotá) for recreational purposes [37].…”