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Journal of Tropical Medicine
Volume 2012, Article ID 760951, 11 pages
Research Article

Diffusion Pattern and Hotspot Detection of Dengue in Belo Horizonte, Minas Gerais, Brazil

1Belo Horizonte Observatory for Urban Health (OSUBH), UFMG, 30130 Belo Horizonte, MG, Brazil
2Municipal Health Secretariat of Belo Horizonte, 30130 Belo Horizonte, MG, Brazil

Received 15 September 2011; Revised 1 November 2011; Accepted 2 December 2011

Academic Editor: M. C. Field

Copyright © 2012 José Eduardo Marques Pessanha Pessanha et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This study considers the dengue occurrence in the city of Belo Horizonte over the last fifteen years. Approximately 186,000 cases registered from 1996 to 2011 were analyzed. The home address of individuals whose dengue case was notified was used as a proxy for exposure location. For determining possible outbreaks of disease and the specific patterns of dengue cases, spatial statistics used included Kernel’s estimation. The occurrence of waves of dengue outbreaks was correlated with climatic and vector presence data. Outbreaks had different durations and intensities: case clustering, thinned out both spatially and temporally. These findings may be useful for public health professionals responsible for fighting the disease providing some tools for improving evaluation of interventions such as vector control and patient care, minimizing the collective and individual burden of the disease.