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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 110, No. 4, 2015, pp. 528-533
Bioline Code: oc15067
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 110, No. 4, 2015, pp. 528-533

 en The spatiotemporal trajectory of a dengue epidemic in a medium-sized city
Morato, Daniela G.; Barreto, Florisneide R.; Braga, José U.; Natividade, Marcio S.; Costa, Maria da ConceiCostação N.; Morato, Vanessa & Teixeira, Maria da Glória Lima Cruz

Abstract

Understanding the transmission dynamics of infectious diseases is important to allow for improvements of control measures. To investigate the spatiotemporal pattern of an epidemic dengue occurred at a medium-sized city in the Northeast Region of Brazil in 2009, we conducted an ecological study of the notified dengue cases georeferenced according to epidemiological week (EW) and home address. Kernel density estimation and space-time interaction were analysed using the Knox method. The evolution of the epidemic was analysed using an animated projection technique. The dengue incidence was 6.918.7/100,000 inhabitants; the peak of the epidemic occurred from 8 February-1 March, EWs 6-9 (828.7/100,000 inhabitants). There were cases throughout the city and was identified space-time interaction. Three epicenters were responsible for spreading the disease in an expansion and relocation diffusion pattern. If the health services could detect in real time the epicenters and apply nimbly control measures, may possibly reduce the magnitude of dengue epidemics.

Keywords
dengue; epidemiology; epidemic; diffusion; spatiotemporal; trajectory

 
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