Mauricio FUENTES VALLEJO, LADYSS / Paris 8, France
Vincent GODARD, LADYSS / Paris 8, France
Stéphane RICAN, LADYSS / Paris Nanterre, France
Dengue is a widespread and expanding disease that affects millions of people. Relations between heterogenous dengue transmission, socioeconomic and ecological determinants remain to be established, especially within cities. Previous transdisciplinary dengue research efforts in the city of Girardot (Colombia), showed the need to further explore a geographical perspective to assess the determinants of dengue persistence in intra-urban settings with hyper-endemic dengue transmission.
Spatial autocorrelation and space-time scan statistics analyses were performed in Girardot, Colombia (2010-2017). Intra-urban dengue persistence was identified and used to conduct Geographically Weighted Regression models. Qualitative research (interviews and fieldwork observations) informed the design and interpretation of models.
Significant spatial and space-time clusters were identified. Space-time clusters were frequent in the north and during tourist seasons. Space-time analyses informed dengue persistence (sustained transmission). Modelling showed better results for dengue persistence over incidence. Dengue persistence indicated positive and negative correlations with average age, patients’ mobility, poverty and vegetation. The first two were related to centre-periphery territorial dynamics, while the latter to mixed-use urban spaces and littering in water drainage channels with denser vegetation.
Geographical approach informed conceptual and operative definition of dengue persistence in hyper-endemic urban space, reinforcing dengue determinants’ assessment through a mixed method approach. Importance of heterogenous urban space was stressed, contributing to transdisciplinary dengue research.
Mots clés : Dengue|Urban space|Mixed methods|Determinants of health|Colombia
A102848MF