Urbanization of Brazilian spotted fever in a municipality of the southeastern region: epidemiology and spatial distribution
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1980-5497201500020002 http://hdl.handle.net/11449/157742 |
Resumo: | INTRODUCTION: Brazilian spotted fever is an emerging zoonosis notified mainly in the Southeast of Brazil, especially due to its high level of lethality. OBJECTIVE: To analyze the epidemiological and spatial pattern of the disease in the municipality of Valinhos (106,793 inhabitants), São Paulo, Southeastern region of Brazil, in the period between 2001 and 2012. METHODS: All laboratory-confirmed cases with likely site of infection in the city (n = 49) notified in the Brazilian Case Registry Database were studied. Sites were geocoded using the cartographic base of the city and Google Earth (geographic coordinates) with correction according to the Brazilian Geodetic System. We used the Kernel estimator to analyze the density of the cases on the map. Land cover and distance to basins of all cases were analyzed. Information about tick species and primary hosts were obtained from reports of the Superintendence of Control of Endemic Diseases. RESULTS: Seasonality of the disease was observed with the highest incidence from June to November, and in 2005 and 2011. The most affected groups were men (79.6%) aged 20-49 years old (49%). Lethality was found to be 42.9%. Maps showed the progressive registration of cases in the urban area. Capybaras were reported as the main primary host, and Amblyomma cajennense was identified in probable sites of infection during field investigation. The likely sites of infection were mostly located near basins, dirty pastures, and bordering woods. CONCLUSIONS: The transmission pattern of Brazilian spotted fever in Valinhos is similar to that in other cities in the region, where capybara is the main primary host and an amplifier of R. rickettsii. Over the years, a higher occurrence of cases has been identified in the urban area of the city. |
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Urbanization of Brazilian spotted fever in a municipality of the southeastern region: epidemiology and spatial distributionUrbanização da febre maculosa brasileira em município da região Sudeste: epidemiologia e distribuição espacialBrazilian spotted feverSpatial distributionEpidemiologyUrbanizationRickettsia rickettsiiAmblyomma sspCapibaraFebre maculosa brasileiraDistribuição espacial da populaçãoEpidemiologiaUrbanizaçãoRickettsia rickettsiiAmblyomma ssp.CapivaraINTRODUCTION: Brazilian spotted fever is an emerging zoonosis notified mainly in the Southeast of Brazil, especially due to its high level of lethality. OBJECTIVE: To analyze the epidemiological and spatial pattern of the disease in the municipality of Valinhos (106,793 inhabitants), São Paulo, Southeastern region of Brazil, in the period between 2001 and 2012. METHODS: All laboratory-confirmed cases with likely site of infection in the city (n = 49) notified in the Brazilian Case Registry Database were studied. Sites were geocoded using the cartographic base of the city and Google Earth (geographic coordinates) with correction according to the Brazilian Geodetic System. We used the Kernel estimator to analyze the density of the cases on the map. Land cover and distance to basins of all cases were analyzed. Information about tick species and primary hosts were obtained from reports of the Superintendence of Control of Endemic Diseases. RESULTS: Seasonality of the disease was observed with the highest incidence from June to November, and in 2005 and 2011. The most affected groups were men (79.6%) aged 20-49 years old (49%). Lethality was found to be 42.9%. Maps showed the progressive registration of cases in the urban area. Capybaras were reported as the main primary host, and Amblyomma cajennense was identified in probable sites of infection during field investigation. The likely sites of infection were mostly located near basins, dirty pastures, and bordering woods. CONCLUSIONS: The transmission pattern of Brazilian spotted fever in Valinhos is similar to that in other cities in the region, where capybara is the main primary host and an amplifier of R. rickettsii. Over the years, a higher occurrence of cases has been identified in the urban area of the city.INTRODUÇÃO: A febre maculosa brasileira é uma zoonose de caráter reemergente notificada principalmente na região Sudeste do Brasil, destacando-se pela sua alta letalidade. OBJETIVO: Analisar o padrão epidemiológico e espacial dessa enfermidade no município de Valinhos, São Paulo (106.793 habitantes), no período de 2001 até 2012. MÉTODOS: Foram estudados todos os casos confirmados laboratorialmente (n = 49) com local provável de infecção no município, notificados no Sistema de Informação sobre Agravos Notificáveis. Os locais foram georreferenciados na base cartográfica usando o Google Earth (coordenadas geográficas) com correção de acordo com o Sistema Geodésico Brasileiro. Utilizou-se o estimador Kernel para a análise da densidade de casos no mapa. Cobertura do solo e distância a coleções hídricas foram analisados. A presença de espécies de carrapatos e hospedeiros primários foram obtidos de relatórios da Superintendência de Controles de Endemias. RESULTADOS: Observou-se sazonalidade da doença com maior incidência entre junho a novembro, sendo os anos de 2005 e 2011 os de maior ocorrência. Houve predomínio de casos no sexo masculino (79,6%) e na faixa etária 20 a 49 anos (49%). A letalidade foi de 42,9%. Os mapas mostram o registro progressivo de casos na zona urbana da cidade. As capivaras foram notificadas como principal hospedeiro primário de Amblyomma cajennense, espécie identificada nas pesquisas acarológicas no local de estudo. Os locais prováveis de infecção estão localizados, na maioria, próximos às coleções hídricas, pastos sujos e mata ciliar degradada. CONCLUSÕES: O padrão de transmissão da febre maculosa brasileira em Valinhos é semelhante ao descrito em outras cidades da região, onde a capivara é o principal hospedeiro primário do vetor e amplificador da bactéria R. rickettsii. Com o passar dos anos foi identificada uma maior ocorrência de casos na área urbana do município.Universidade Estadual de Campinas School of Medical Sciences Laboratory of Spatial Analysis of Epidemiological DataSecretariat of Health of Valinhos Department of Public Health of ValinhosUniversidade Estadual Paulista Júlio de Mesquita Filho School of Environmental EngineeringUniversidade Estadual Paulista Júlio de Mesquita Filho School of Environmental EngineeringAssociação Brasileira de Saúde ColetivaUniversidade Estadual de Campinas (UNICAMP)Secretariat of Health of Valinhos Department of Public Health of ValinhosUniversidade Estadual Paulista (Unesp)Nasser, Jeanette TrigoLana, Rafael CésarSilva, Claudia Maria Dos SantosLourenço, Roberto WagnerSilva, Darllan Collins Da Cunha EDonalísio, Maria Rita2018-11-12T17:26:43Z2018-11-12T17:26:43Z2015-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article299-312application/pdfhttp://dx.doi.org/10.1590/1980-5497201500020002Revista Brasileira de Epidemiologia. Associação Brasileira de Saúde Coletiva, v. 18, n. 2, p. 299-312, 2015.1415-790Xhttp://hdl.handle.net/11449/15774210.1590/1980-5497201500020002S1415-790X2015000200299S1415-790X2015000200299.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Epidemiologiainfo:eu-repo/semantics/openAccess2024-01-04T06:29:44Zoai:repositorio.unesp.br:11449/157742Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:08:34.681838Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Urbanization of Brazilian spotted fever in a municipality of the southeastern region: epidemiology and spatial distribution Urbanização da febre maculosa brasileira em município da região Sudeste: epidemiologia e distribuição espacial |
title |
Urbanization of Brazilian spotted fever in a municipality of the southeastern region: epidemiology and spatial distribution |
spellingShingle |
Urbanization of Brazilian spotted fever in a municipality of the southeastern region: epidemiology and spatial distribution Nasser, Jeanette Trigo Brazilian spotted fever Spatial distribution Epidemiology Urbanization Rickettsia rickettsii Amblyomma ssp Capibara Febre maculosa brasileira Distribuição espacial da população Epidemiologia Urbanização Rickettsia rickettsii Amblyomma ssp. Capivara |
title_short |
Urbanization of Brazilian spotted fever in a municipality of the southeastern region: epidemiology and spatial distribution |
title_full |
Urbanization of Brazilian spotted fever in a municipality of the southeastern region: epidemiology and spatial distribution |
title_fullStr |
Urbanization of Brazilian spotted fever in a municipality of the southeastern region: epidemiology and spatial distribution |
title_full_unstemmed |
Urbanization of Brazilian spotted fever in a municipality of the southeastern region: epidemiology and spatial distribution |
title_sort |
Urbanization of Brazilian spotted fever in a municipality of the southeastern region: epidemiology and spatial distribution |
author |
Nasser, Jeanette Trigo |
author_facet |
Nasser, Jeanette Trigo Lana, Rafael César Silva, Claudia Maria Dos Santos Lourenço, Roberto Wagner Silva, Darllan Collins Da Cunha E Donalísio, Maria Rita |
author_role |
author |
author2 |
Lana, Rafael César Silva, Claudia Maria Dos Santos Lourenço, Roberto Wagner Silva, Darllan Collins Da Cunha E Donalísio, Maria Rita |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Campinas (UNICAMP) Secretariat of Health of Valinhos Department of Public Health of Valinhos Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Nasser, Jeanette Trigo Lana, Rafael César Silva, Claudia Maria Dos Santos Lourenço, Roberto Wagner Silva, Darllan Collins Da Cunha E Donalísio, Maria Rita |
dc.subject.por.fl_str_mv |
Brazilian spotted fever Spatial distribution Epidemiology Urbanization Rickettsia rickettsii Amblyomma ssp Capibara Febre maculosa brasileira Distribuição espacial da população Epidemiologia Urbanização Rickettsia rickettsii Amblyomma ssp. Capivara |
topic |
Brazilian spotted fever Spatial distribution Epidemiology Urbanization Rickettsia rickettsii Amblyomma ssp Capibara Febre maculosa brasileira Distribuição espacial da população Epidemiologia Urbanização Rickettsia rickettsii Amblyomma ssp. Capivara |
description |
INTRODUCTION: Brazilian spotted fever is an emerging zoonosis notified mainly in the Southeast of Brazil, especially due to its high level of lethality. OBJECTIVE: To analyze the epidemiological and spatial pattern of the disease in the municipality of Valinhos (106,793 inhabitants), São Paulo, Southeastern region of Brazil, in the period between 2001 and 2012. METHODS: All laboratory-confirmed cases with likely site of infection in the city (n = 49) notified in the Brazilian Case Registry Database were studied. Sites were geocoded using the cartographic base of the city and Google Earth (geographic coordinates) with correction according to the Brazilian Geodetic System. We used the Kernel estimator to analyze the density of the cases on the map. Land cover and distance to basins of all cases were analyzed. Information about tick species and primary hosts were obtained from reports of the Superintendence of Control of Endemic Diseases. RESULTS: Seasonality of the disease was observed with the highest incidence from June to November, and in 2005 and 2011. The most affected groups were men (79.6%) aged 20-49 years old (49%). Lethality was found to be 42.9%. Maps showed the progressive registration of cases in the urban area. Capybaras were reported as the main primary host, and Amblyomma cajennense was identified in probable sites of infection during field investigation. The likely sites of infection were mostly located near basins, dirty pastures, and bordering woods. CONCLUSIONS: The transmission pattern of Brazilian spotted fever in Valinhos is similar to that in other cities in the region, where capybara is the main primary host and an amplifier of R. rickettsii. Over the years, a higher occurrence of cases has been identified in the urban area of the city. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-06-01 2018-11-12T17:26:43Z 2018-11-12T17:26:43Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/1980-5497201500020002 Revista Brasileira de Epidemiologia. Associação Brasileira de Saúde Coletiva, v. 18, n. 2, p. 299-312, 2015. 1415-790X http://hdl.handle.net/11449/157742 10.1590/1980-5497201500020002 S1415-790X2015000200299 S1415-790X2015000200299.pdf |
url |
http://dx.doi.org/10.1590/1980-5497201500020002 http://hdl.handle.net/11449/157742 |
identifier_str_mv |
Revista Brasileira de Epidemiologia. Associação Brasileira de Saúde Coletiva, v. 18, n. 2, p. 299-312, 2015. 1415-790X 10.1590/1980-5497201500020002 S1415-790X2015000200299 S1415-790X2015000200299.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira de Epidemiologia |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
299-312 application/pdf |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Saúde Coletiva |
publisher.none.fl_str_mv |
Associação Brasileira de Saúde Coletiva |
dc.source.none.fl_str_mv |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129396739932160 |