Dynamic behavior of sylvatic yellow fever in Brazil (1954-2008)
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 o...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Medicina Tropical (SBMT)
2011-06-01
|
| Series: | Revista da Sociedade Brasileira de Medicina Tropical |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822011000300006&lng=en&tlng=en |
| _version_ | 1818237249888714752 |
|---|---|
| author | Fernando Portela Câmara Ana Luisa Bessa Bacellar Gomes Luiz Max Fagundes de Carvalho Luiz Gustavo Veloso Castello |
| author_facet | Fernando Portela Câmara Ana Luisa Bessa Bacellar Gomes Luiz Max Fagundes de Carvalho Luiz Gustavo Veloso Castello |
| author_sort | Fernando Portela Câmara |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-12T12:22:46Z |
| format | Article |
| id | doaj.art-576357e687d94aef8a0dfc19380b8b93 |
| institution | Directory Open Access Journal |
| issn | 1678-9849 |
| language | English |
| last_indexed | 2024-12-12T12:22:46Z |
| publishDate | 2011-06-01 |
| publisher | Sociedade Brasileira de Medicina Tropical (SBMT) |
| record_format | Article |
| series | Revista da Sociedade Brasileira de Medicina Tropical |
| spelling | doaj.art-576357e687d94aef8a0dfc19380b8b932022-12-22T00:24:37ZengSociedade Brasileira de Medicina Tropical (SBMT)Revista da Sociedade Brasileira de Medicina Tropical1678-98492011-06-0144329729910.1590/s0037-86822011005000024S0037-86822011000300006Dynamic behavior of sylvatic yellow fever in Brazil (1954-2008)Fernando Portela Câmara0Ana Luisa Bessa Bacellar Gomes1Luiz Max Fagundes de Carvalho2Luiz Gustavo Veloso Castello3Universidade Federal do Rio de JaneiroUniversidade Federal do Rio de JaneiroUniversidade Federal do Rio de JaneiroUniversidade Federal do Rio de JaneiroINTRODUCTION: 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822011000300006&lng=en&tlng=enFebre amarela silvestrePeriodicidadeAnálise espectralEpidemiologia |
| spellingShingle | Fernando Portela Câmara Ana Luisa Bessa Bacellar Gomes Luiz Max Fagundes de Carvalho Luiz Gustavo Veloso Castello Dynamic behavior of sylvatic yellow fever in Brazil (1954-2008) Revista da Sociedade Brasileira de Medicina Tropical Febre amarela silvestre Periodicidade Análise espectral Epidemiologia |
| title | Dynamic behavior of sylvatic yellow fever in Brazil (1954-2008) |
| title_full | Dynamic behavior of sylvatic yellow fever in Brazil (1954-2008) |
| title_fullStr | Dynamic behavior of sylvatic yellow fever in Brazil (1954-2008) |
| title_full_unstemmed | Dynamic behavior of sylvatic yellow fever in Brazil (1954-2008) |
| title_short | Dynamic behavior of sylvatic yellow fever in Brazil (1954-2008) |
| title_sort | dynamic behavior of sylvatic yellow fever in brazil 1954 2008 |
| topic | Febre amarela silvestre Periodicidade Análise espectral Epidemiologia |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822011000300006&lng=en&tlng=en |
| work_keys_str_mv | AT fernandoportelacamara dynamicbehaviorofsylvaticyellowfeverinbrazil19542008 AT analuisabessabacellargomes dynamicbehaviorofsylvaticyellowfeverinbrazil19542008 AT luizmaxfagundesdecarvalho dynamicbehaviorofsylvaticyellowfeverinbrazil19542008 AT luizgustavovelosocastello dynamicbehaviorofsylvaticyellowfeverinbrazil19542008 |