A caller study led by researchers from nan University of Eastern Finland and a squad of world collaborators shows that dengue outbreaks successful Medellín, Colombia, are powerfully linked to patterns of municipality improvement and socioeconomic status. The findings item nan imaginable of leveraging land-use readying and targeted nationalist wellness strategies to much efficaciously power dengue successful hyperendemic areas.
By analyzing much than 40,000 georeferenced dengue cases recorded betwixt 2010 and 2020, nan study recovered that conscionable 26% of nan city's neighbourhoods accounted for 50% of each infections. These "hotspot" areas were predominantly located successful low- and middle-income communities pinch built-up onshore cover. In contrast, neighborhoods pinch higher socioeconomic position and much greenish abstraction knowledgeable acold less outbreaks.
What's striking is that galore of these hotspots are not isolated incidents. Some neighborhoods were affected twelvemonth aft twelvemonth - up to 7 years successful immoderate cases."
Juliana Pérez-Pérez, Doctoral Researcher, study's lead author, University of Eastern Finland
Using spatial statistic crossed 249 barrios successful Medellín, nan investigation squad identified some single-year and recurrent hotspots. These patterns varied depending connected whether nan twelvemonth was classified arsenic epidemic, non-epidemic aliases terrible epidemic, but definite areas consistently appeared arsenic high-risk zones.
Traditional dengue power programmes thin to use nan aforesaid measures crossed full cities, but nan findings propose a much strategical attack is needed. By combining epidemiological surveillance pinch insights from onshore usage and municipality planning, nationalist wellness interventions tin beryllium much targeted and effective.
"Dengue is often seen arsenic a situation for nan Global South, but nan conditions that favour its dispersed - urbanisation, societal inequality and warming ambiance - are now progressively coming elsewhere too," Pérez-Pérez adds.
"This study shows that nan spatial and societal dynamics of dengue are not random. Recognizing really onshore usage and socioeconomic position style illness consequence tin thief america not only target section responses successful places for illustration Medellín, but besides hole different regions, including parts of Europe, for what whitethorn soon go a increasing nationalist wellness challenge."
The study emphasizes nan value of integrating disciplines, specified arsenic nationalist health, ecology, municipality surface science and spatial analysis, to amended understand and respond to nan dispersed of mosquito-borne diseases successful municipality environments.
Source:
Journal reference:
Pérez-Pérez, J., et al. (2025). Effect of Socioeconomic Strata and Land Cover connected Dengue Hotspots successful Medellin, Colombia. The American Journal of Tropical Medicine and Hygiene. doi.org/10.4269/ajtmh.24-0665.