Malaria intensity in Colombia by regions and populations
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ID: 283627
2017
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Abstract
Determining the distribution of disease prevalence among heterogeneous
populations at the national scale is fundamental for epidemiology and public
health. Here, we use a combination of methods (spatial scan statistic,
topological data analysis, epidemic profile) to study measurable differences in
malaria intensity by regions and populations of Colombia. This study explores
three main questions: What are the regions of Colombia where malaria is
epidemic? What are the regions and populations in Colombia where malaria is
endemic? What associations exist between epidemic outbreaks between regions in
Colombia? \textit{Plasmodium falciparum} is most prevalent in the Pacific
Coast, some regions of the Amazon Basin, and some regions of the Magdalena
Basin. \textit{Plasmodium vivax} is the most prevalent parasite in Colombia,
particularly in the Northern Amazon Basin, the Caribbean, and municipalities of
Sucre, Antioquia and Cordoba. Malaria has been reported to be most common among
15-45 year old men. We find that the age-class suffering high risk of malaria
infection ranges from 20 to 30 with an acute peak at 25 years of age. Second,
this pattern was not found to be generalizable across Colombian populations,
Indigenous and Afrocolombian populations experience endemic malaria (with
household transmission). Third, clusters of epidemic malaria for
\textit{Plasmodium vivax} were detected across Southern Colombia including the
Amazon Basin and the Southern Pacific region. \textit{Plasmodium falciparum},
was is epidemic in 13 of the 1,123 municipalities (1.2\%). Some key locations
act as bridges between epidemic and endemic regions. Finally, we generate a
regional classification based on intensity and synchrony, dividing the country
into epidemic areas and bridge areas.
| Reference Key |
rivera2017malaria
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| Authors | Alejandro Feged-Rivadeneira; Andrés Angel; Felipe González-Casabianca; Camilo Rivera |
| Journal | arXiv |
| Year | 2017 |
| DOI |
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