Document Detail

Dynamic behavior of sylvatic yellow fever in Brazil (1954-2008).
MedLine Citation:
PMID:  21537794     Owner:  NLM     Status:  Publisher    
INTRODUCTION: Sylvatic yellow fever (SYF) is enzootic in Brazil, causing periodic outbreaks in humans living near forest borders or in rural areas. In this study, the cycling patterns of this arbovirosis were analyzed. METHODS: Spectral Fourier analysis was used to capture the periodicity patterns of SYF in time series. RESULTS: SYF outbreaks have not increased in frequency, only in the number of cases. There are two dominant cycles in SYF outbreaks, a seven year cycle for the central-western region and a 14 year cycle for the northern region. Most of the variance was concentrated in the central-western region and dominated the entire endemic region. CONCLUSIONS: The seven year cycle is predominant in the endemic region of the disease due the greater contribution of variance in the central-western region; however, it was possible identify a 14 cycle that governs SYF outbreaks in the northern region. No periodicities were identified for the remaining geographical regions.
Fernando Portela Câmara; Ana Luisa Bessa Bacellar Gomes; Luiz Max Fagundes de Carvalho; Luiz Gustavo Veloso Castello
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-29
Journal Detail:
Title:  Revista da Sociedade Brasileira de Medicina Tropical     Volume:  -     ISSN:  1678-9849     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-5-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7507456     Medline TA:  Rev Soc Bras Med Trop     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Setor de Epidemiologia de Doenças Infecto-Contagiosas, Instituto de Microbiologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ.
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