Spatial distribution and incidence of dengue cases: an analysis of the situation in Medellín, Colombia
DOI:
https://doi.org/10.17533/udea.rfnsp.13967Keywords:
dengue, epidemiology, Medellín, Geographic Information SystemsAbstract
Objective: to analyze the spatial distribution of dengue cases and the incidence of this disease. Methodology: 17.400 dengue cases were spatially located by means of the addresses of patients which were reported by Data Generating Primary Units to the Medellin Office of the Health Secretary from 2007 to 2011. Dengue incidences were calculated and geospatially ranked with the ArcGIS 9.3 software, and they were categorized by risk level according to the Pan American Health Organization. Results and Discussion: the disease was distributed heterogeneously throughout the various neighborhoods of the city. The years 2007 and 2010 had the highest number of cases, thus being epidemic years; the other years showing an endemic behavior. In 2007 none of the neighborhoods was in very high risk category; however, in 2010, 49 neighborhoods were placed inside this category. As for endemic years according to dengue incidence, of the 249 neighborhoods of the city, just two of them were found in high risk in 2008 and 2009, but none in 2011. Moreover, a large percentage of neighborhoods in these years were considered to be in the low risk category.
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