Household survey of dengue infection in central Brazil: spatial point pattern analysis and risk factors assessment.

Abstract

Urban dengue fever is now considered a major public health threat in most American countries. A household survey was conducted in the city of Goiania in central Brazil in 2001 to assess prevalence of dengue infection and individual and area-based risk factors. Spatial point pattern analysis was performed using the dual Kernel method. A total of 1,610 households were surveyed; 1,585 individuals more than five years old had blood and data collected. Sera were tested for IgM/IgG antibodies by an enzyme-linked immunoassay. Area-based indicators derived from census data were linked to geocoded residential address. The seroprevalence of dengue was 29.5% and the estimate prevalence surface reached 50% in the outskirts areas. The risk of infection was significantly associated with older age (P < 0.01), low education (odds ratio [OR] = 3.45, 95% confidence interval [CI] = 1.82-6.55), and low income (OR = 1.32, 95% CI = 1.02-1.71) in multivariate analysis. This study highlighted the heterogeneity of dengue transmission within the city and can assist in spatial targeting control interventions.

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@article{Siqueira2004HouseholdSO, title={Household survey of dengue infection in central Brazil: spatial point pattern analysis and risk factors assessment.}, author={Jo{\~a}o Bosco Siqueira and Celina Maria Turchi Martelli and Ivan J Maciel and Renato Maur{\'i}cio de Oliveira and Maria Gil Ribeiro and Fl{\'u}via P Amorim and Bruno Moreira and Divina das D{\^o}res de Paula Cardoso and Wayner Vieira de Souza and Ana L{\'u}cia S. S. Andrade}, journal={The American journal of tropical medicine and hygiene}, year={2004}, volume={71 5}, pages={646-51} }