Temporal, spatial and spatiotemporal analysis of the occurrence of visceral leishmaniasis in humans in the City of Birigui, State of São Paulo, from 1999 to 2012
Introduction In 1999, Birigui and Araçatuba were the first municipalities in the State of São Paulo to present autochthonous cases of visceral leishmaniasis in humans (VLH). The aim of this study was to describe the temporal, spatial and spatiotemporal behaviors of VLH in Birigui. Methods Secondar...
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Sociedade Brasileira de Medicina Tropical (SBMT)
2014-06-01
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| Series: | Revista da Sociedade Brasileira de Medicina Tropical |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822014000300350&lng=en&tlng=en |
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| author | Carolina Portugal Vieira Agda Maria Oliveira Lilian Aparecida Colebrusco Rodas Margareth Regina Dibo Marluci Monteiro Guirado Francisco Chiaravalloti Neto |
| author_facet | Carolina Portugal Vieira Agda Maria Oliveira Lilian Aparecida Colebrusco Rodas Margareth Regina Dibo Marluci Monteiro Guirado Francisco Chiaravalloti Neto |
| author_sort | Carolina Portugal Vieira |
| collection | DOAJ |
| description | Introduction In 1999, Birigui and Araçatuba were the first municipalities in the State of São Paulo to present autochthonous cases of visceral leishmaniasis in humans (VLH). The aim of this study was to describe the temporal, spatial and spatiotemporal behaviors of VLH in Birigui. Methods Secondary data were obtained from the Notifiable Diseases Information System from 1999 to 2012. The incidence, mortality and case fatality rates by sex and age were calculated. The cases of VLH were geocoded and grouped according to census tracts. Local empirical Bayesian incidence rates were calculated. The existence of spatial and spatiotemporal clusters was investigated using SaTScan software. Results There were 156 confirmed cases of autochthonous VLH. The incidence rate was higher in the 0-4-year-old children, and the mortality and case fatality rates were higher in people aged 60 years and older. The peaks of incidence occurred in 2006 and 2011. The Bayesian rates identified the presence of VLH in all of the census tracts in the municipality; however, spatial and spatiotemporal clusters were found in the central area of the municipality. Conclusions Birigui, located in the Araçatuba region, has recently experienced increasing numbers of VLH cases; this increase is contrary to the behavior observed over the entire region, which has shown a decreasing trend in the number of VLH cases. The observations that the highest incidence is in children 0-4 years old and the highest mortality is in people 60 years and older are in agreement with the expected patterns of VLH. |
| first_indexed | 2024-04-13T20:15:14Z |
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| id | doaj.art-1a51887148844f708e5448282902a554 |
| institution | Directory Open Access Journal |
| issn | 1678-9849 |
| language | English |
| last_indexed | 2024-04-13T20:15:14Z |
| publishDate | 2014-06-01 |
| publisher | Sociedade Brasileira de Medicina Tropical (SBMT) |
| record_format | Article |
| series | Revista da Sociedade Brasileira de Medicina Tropical |
| spelling | doaj.art-1a51887148844f708e5448282902a5542022-12-22T02:31:44ZengSociedade Brasileira de Medicina Tropical (SBMT)Revista da Sociedade Brasileira de Medicina Tropical1678-98492014-06-0147335035810.1590/0037-8682-0047-2014S0037-86822014000300350Temporal, spatial and spatiotemporal analysis of the occurrence of visceral leishmaniasis in humans in the City of Birigui, State of São Paulo, from 1999 to 2012Carolina Portugal VieiraAgda Maria OliveiraLilian Aparecida Colebrusco RodasMargareth Regina DiboMarluci Monteiro GuiradoFrancisco Chiaravalloti NetoIntroduction In 1999, Birigui and Araçatuba were the first municipalities in the State of São Paulo to present autochthonous cases of visceral leishmaniasis in humans (VLH). The aim of this study was to describe the temporal, spatial and spatiotemporal behaviors of VLH in Birigui. Methods Secondary data were obtained from the Notifiable Diseases Information System from 1999 to 2012. The incidence, mortality and case fatality rates by sex and age were calculated. The cases of VLH were geocoded and grouped according to census tracts. Local empirical Bayesian incidence rates were calculated. The existence of spatial and spatiotemporal clusters was investigated using SaTScan software. Results There were 156 confirmed cases of autochthonous VLH. The incidence rate was higher in the 0-4-year-old children, and the mortality and case fatality rates were higher in people aged 60 years and older. The peaks of incidence occurred in 2006 and 2011. The Bayesian rates identified the presence of VLH in all of the census tracts in the municipality; however, spatial and spatiotemporal clusters were found in the central area of the municipality. Conclusions Birigui, located in the Araçatuba region, has recently experienced increasing numbers of VLH cases; this increase is contrary to the behavior observed over the entire region, which has shown a decreasing trend in the number of VLH cases. The observations that the highest incidence is in children 0-4 years old and the highest mortality is in people 60 years and older are in agreement with the expected patterns of VLH.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822014000300350&lng=en&tlng=enVisceral leishmaniasisTemporal analysisSpatial analysis |
| spellingShingle | Carolina Portugal Vieira Agda Maria Oliveira Lilian Aparecida Colebrusco Rodas Margareth Regina Dibo Marluci Monteiro Guirado Francisco Chiaravalloti Neto Temporal, spatial and spatiotemporal analysis of the occurrence of visceral leishmaniasis in humans in the City of Birigui, State of São Paulo, from 1999 to 2012 Revista da Sociedade Brasileira de Medicina Tropical Visceral leishmaniasis Temporal analysis Spatial analysis |
| title | Temporal, spatial and spatiotemporal analysis of the occurrence of visceral leishmaniasis in humans in the City of Birigui, State of São Paulo, from 1999 to 2012 |
| title_full | Temporal, spatial and spatiotemporal analysis of the occurrence of visceral leishmaniasis in humans in the City of Birigui, State of São Paulo, from 1999 to 2012 |
| title_fullStr | Temporal, spatial and spatiotemporal analysis of the occurrence of visceral leishmaniasis in humans in the City of Birigui, State of São Paulo, from 1999 to 2012 |
| title_full_unstemmed | Temporal, spatial and spatiotemporal analysis of the occurrence of visceral leishmaniasis in humans in the City of Birigui, State of São Paulo, from 1999 to 2012 |
| title_short | Temporal, spatial and spatiotemporal analysis of the occurrence of visceral leishmaniasis in humans in the City of Birigui, State of São Paulo, from 1999 to 2012 |
| title_sort | temporal spatial and spatiotemporal analysis of the occurrence of visceral leishmaniasis in humans in the city of birigui state of sao paulo from 1999 to 2012 |
| topic | Visceral leishmaniasis Temporal analysis Spatial analysis |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822014000300350&lng=en&tlng=en |
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