Dengue Infection in Rondônia-Brazil: Epidemiological and Environmental Aspects during 2001-2010 Occurrence
Ana Flávia Costa da Silveira Oliveira
Federal Institute of Education, Science and Tecnology of the North of Minas Gerais, Almenara, Minas Gerais, Brazil and Laboratory of Molecular Immunovirology, Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
André Silva de Oliveira
Federal Institute of Education, Science and Tecnology of the North of Minas Gerais, Almenara, Minas Gerais, Brazil and Laboratory of Molecular Immunovirology, Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
Edjon Gonçaves dos Santos
Laboratory of Molecular Immunovirology, Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
Celso Aparecido da Silva Filho
Department of Medicine, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
Eduardo Honda
Research Center for Tropical Medicine – CEPEM, Porto Velho (RO), Brazil.
Andréia Patricia Gomes
Department of Medicine, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
Rodrigo Siqueira-Batista
Department of Medicine, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
Cynthia Canedo da Silva
Department of Microbiology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
Sérgio Oliveira De Paula
Laboratory of Molecular Immunovirology, Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
*Author to whom correspondence should be addressed.
Abstract
Aims: The state of Rondônia is located in the western area of the Brazilian Amazon, and presents a strategic location for the spread of dengue virus. This study aims to characterize the epidemiology of dengue in Rondônia from 2001-2010.
Study Design: This is a descriptive work that aims to study time series of dengue epidemics from the resident population in the municipalities of the state of Rondonia (Brazil) in the period 2001-2010.
Place and Duration of Study: This study used secondary data. Data was obtained from the Notifiable Diseases Information System (SINAN) using only confirmed cases of dengue during the period from 2001-2010 in the Rondônia state (Brazil). Population statistics were obtained from the Brazilian Institute of Geography and Statistics (IBGE - www.ibge.gov.br).
Methodology: The epidemiological profile of the disease was traced from the following variables: year of reporting; age; gender, education; final classification; and confirmation criterion. Rainfall and migratory pathways were compared with the disease incidence rate of the cities.
Results: 71,541 cases of dengue were reported in this period. Although Rondônia is not one of the states with the highest incidence rates of dengue in Brazil, it presents some cities with over 4,000 cases/100,000 inhabitants. We found that waterways, roads, ports, airports and borders tend to be associated with regions with the highest number of cases.
Conclusion: Cities where many people from various localities circulate require special epidemiological attention. This analysis points to the need to improve the monitoring/control of vectors, patients and possibly sick people.
Keywords: Dengue, epidemiology, migration, rainfall.