Spatio-temporal analysis of the occurrence of human visceral leishmaniasis in Araçatuba, State of São Paulo, Brazil

Abstract INTRODUCTION: This study aimed to describe the occurrence of human visceral leishmaniasis in Araçatuba with regard to time and space and to identify high risk areas. METHODS: We included all human visceral leishmaniasis autochthonous cases reported between 1999 and 2015. The incidence rates...

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Published in:Revista da Sociedade Brasileira de Medicina Tropical
Main Authors: Patricia Marques Moralejo Bermudi, Marluci Monteiro Guirado, Lilian Aparecida Colebrusco Rodas, Margareth Regina Dibo, Francisco Chiaravalloti-Neto
Format: Article in Journal/Newspaper
Language:English
Published: Sociedade Brasileira de Medicina Tropical (SBMT)
Subjects:
Online Access:https://doi.org/10.1590/0037-8682-0505-2017
https://doaj.org/article/164a577d3217415c864dc281df949b98
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spelling ftdoajarticles:oai:doaj.org/article:164a577d3217415c864dc281df949b98 2023-05-15T15:12:06+02:00 Spatio-temporal analysis of the occurrence of human visceral leishmaniasis in Araçatuba, State of São Paulo, Brazil Patricia Marques Moralejo Bermudi Marluci Monteiro Guirado Lilian Aparecida Colebrusco Rodas Margareth Regina Dibo Francisco Chiaravalloti-Neto https://doi.org/10.1590/0037-8682-0505-2017 https://doaj.org/article/164a577d3217415c864dc281df949b98 EN eng Sociedade Brasileira de Medicina Tropical (SBMT) http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822018000400452&lng=en&tlng=en https://doaj.org/toc/1678-9849 1678-9849 doi:10.1590/0037-8682-0505-2017 https://doaj.org/article/164a577d3217415c864dc281df949b98 Revista da Sociedade Brasileira de Medicina Tropical, Vol 51, Iss 4, Pp 452-460 Human visceral leishmaniasis Temporal analysis Spatial and spatio-temporal analysis Brazil Arctic medicine. Tropical medicine RC955-962 article ftdoajarticles https://doi.org/10.1590/0037-8682-0505-2017 2022-12-31T02:52:50Z Abstract INTRODUCTION: This study aimed to describe the occurrence of human visceral leishmaniasis in Araçatuba with regard to time and space and to identify high risk areas. METHODS: We included all human visceral leishmaniasis autochthonous cases reported between 1999 and 2015. The incidence rates were calculated by sex, age, and year. The human visceral leishmaniasis cases were geocoded and grouped by urban census tracts, enabling the calculation of the incidence and mortality rates by census tracts. For the identification of high risk areas, we utilized the scan statistics and univariate Ripley’s K-function. RESULTS: The incidence presented a cyclic pattern in 1999-2009, with peaks in 2002 and 2007 (30.1 and 19.6 cases per 100,000 inhabitant-years, respectively). In 2010-2015, the incidence remained relatively stable with about 2.0 cases per 100,000 inhabitant-years. The scan statistics detected two spatial clusters of high risk and three spatio-temporal clusters of high risk that lasted from 2001 to 2008. A spatial autocorrelation was observed in the human visceral leishmaniasis case point distribution in 1999-2009. No spatio-temporal clusters and no spatial autocorrelation in the case point pattern were identified in 2010-2015. CONCLUSION: We identified a changing pattern of human visceral leishmaniasis occurrence in Araçatuba: the first period (1999-2009) showed a cyclic pattern, clusters, and presence of spatial dependence in the case point distribution; the second period (2010-2015) showed the lowest rates of all historical series, stable incidence, and cases with a random distribution pattern. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Revista da Sociedade Brasileira de Medicina Tropical 51 4 452 460
institution Open Polar
collection Directory of Open Access Journals: DOAJ Articles
op_collection_id ftdoajarticles
language English
topic Human visceral leishmaniasis
Temporal analysis
Spatial and spatio-temporal analysis
Brazil
Arctic medicine. Tropical medicine
RC955-962
spellingShingle Human visceral leishmaniasis
Temporal analysis
Spatial and spatio-temporal analysis
Brazil
Arctic medicine. Tropical medicine
RC955-962
Patricia Marques Moralejo Bermudi
Marluci Monteiro Guirado
Lilian Aparecida Colebrusco Rodas
Margareth Regina Dibo
Francisco Chiaravalloti-Neto
Spatio-temporal analysis of the occurrence of human visceral leishmaniasis in Araçatuba, State of São Paulo, Brazil
topic_facet Human visceral leishmaniasis
Temporal analysis
Spatial and spatio-temporal analysis
Brazil
Arctic medicine. Tropical medicine
RC955-962
description Abstract INTRODUCTION: This study aimed to describe the occurrence of human visceral leishmaniasis in Araçatuba with regard to time and space and to identify high risk areas. METHODS: We included all human visceral leishmaniasis autochthonous cases reported between 1999 and 2015. The incidence rates were calculated by sex, age, and year. The human visceral leishmaniasis cases were geocoded and grouped by urban census tracts, enabling the calculation of the incidence and mortality rates by census tracts. For the identification of high risk areas, we utilized the scan statistics and univariate Ripley’s K-function. RESULTS: The incidence presented a cyclic pattern in 1999-2009, with peaks in 2002 and 2007 (30.1 and 19.6 cases per 100,000 inhabitant-years, respectively). In 2010-2015, the incidence remained relatively stable with about 2.0 cases per 100,000 inhabitant-years. The scan statistics detected two spatial clusters of high risk and three spatio-temporal clusters of high risk that lasted from 2001 to 2008. A spatial autocorrelation was observed in the human visceral leishmaniasis case point distribution in 1999-2009. No spatio-temporal clusters and no spatial autocorrelation in the case point pattern were identified in 2010-2015. CONCLUSION: We identified a changing pattern of human visceral leishmaniasis occurrence in Araçatuba: the first period (1999-2009) showed a cyclic pattern, clusters, and presence of spatial dependence in the case point distribution; the second period (2010-2015) showed the lowest rates of all historical series, stable incidence, and cases with a random distribution pattern.
format Article in Journal/Newspaper
author Patricia Marques Moralejo Bermudi
Marluci Monteiro Guirado
Lilian Aparecida Colebrusco Rodas
Margareth Regina Dibo
Francisco Chiaravalloti-Neto
author_facet Patricia Marques Moralejo Bermudi
Marluci Monteiro Guirado
Lilian Aparecida Colebrusco Rodas
Margareth Regina Dibo
Francisco Chiaravalloti-Neto
author_sort Patricia Marques Moralejo Bermudi
title Spatio-temporal analysis of the occurrence of human visceral leishmaniasis in Araçatuba, State of São Paulo, Brazil
title_short Spatio-temporal analysis of the occurrence of human visceral leishmaniasis in Araçatuba, State of São Paulo, Brazil
title_full Spatio-temporal analysis of the occurrence of human visceral leishmaniasis in Araçatuba, State of São Paulo, Brazil
title_fullStr Spatio-temporal analysis of the occurrence of human visceral leishmaniasis in Araçatuba, State of São Paulo, Brazil
title_full_unstemmed Spatio-temporal analysis of the occurrence of human visceral leishmaniasis in Araçatuba, State of São Paulo, Brazil
title_sort spatio-temporal analysis of the occurrence of human visceral leishmaniasis in araçatuba, state of são paulo, brazil
publisher Sociedade Brasileira de Medicina Tropical (SBMT)
url https://doi.org/10.1590/0037-8682-0505-2017
https://doaj.org/article/164a577d3217415c864dc281df949b98
geographic Arctic
geographic_facet Arctic
genre Arctic
genre_facet Arctic
op_source Revista da Sociedade Brasileira de Medicina Tropical, Vol 51, Iss 4, Pp 452-460
op_relation http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822018000400452&lng=en&tlng=en
https://doaj.org/toc/1678-9849
1678-9849
doi:10.1590/0037-8682-0505-2017
https://doaj.org/article/164a577d3217415c864dc281df949b98
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