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Mortalidad por enfermedad de Chagas en Brasil: patrones espaciales y definición de áreas de alto riesgo
Author(s) -
MartinsMelo Francisco Rogerlândio,
Ramos Alberto Novaes,
Alencar Carlos Henrique,
Lange Wolfram,
Heukelbach Jorg
Publication year - 2012
Publication title -
tropical medicine and international health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.056
H-Index - 114
eISSN - 1365-3156
pISSN - 1360-2276
DOI - 10.1111/j.1365-3156.2012.03043.x
Subject(s) - mortality rate , chagas disease , geography , demography , population , spatial analysis , epidemiology , environmental health , medicine , remote sensing , sociology , immunology
Objective To describe patterns of spatial distribution of mortality associated with Chagas’ disease in Brazil. Methods Nationwide study of all deaths in Brazil from 1999 to 2007, where Chagas’ disease was recorded as a cause of death. Data were obtained from the national Mortality Information System of the Ministry of Health. We calculated the mean mortality rate for each municipality of residence in three‐year intervals and the entire period. Empirical Bayes smoothing was used to minimise random variation in mortality rates because of the population size in the municipalities. To evaluate the existence of spatial autocorrelation, global and local Moran’s I indices were used. Results The nationwide mean mortality rate associated with Chagas’ disease was 3.37/100 000 inhabitants/year, with a maximum of 138.06/100 000 in one municipality. Independently from the statistical approach, spatial analysis identified a large cluster of high risk for mortality by Chagas’ disease, involving nine states in the Central region of Brazil. Conclusion This study defined geographical priority areas for the management of Chagas’ disease and consequently reducing disease‐associated mortality in Brazil. Different spatial‐analytical approaches can be integrated to provide data for planning, monitoring and evaluating specific intervention measures.