The Relative Influence of Polyparasitism, Environment, and Host Factors on Schistosome Infection
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFBA |
Texto Completo: | http://www.repositorio.ufba.br/ri/handle/ri/1749 |
Resumo: | Where prevalence of geohelminths and schistosomes is high, co-infections with multiple parasite species are common. Previous studies have shown that the presence of geohelminths either promotes or is a marker for greater prevalence and intensity of Schistosoma mansoni infections. Some of this apparent synergy may simply represent shared conditions for exposure, such as poor sanitation, and may not suggest a direct biologic interaction. We explored this question in a study of 13,279 school children in Jequié, Bahia, Brazil, with a survey of demographic characteristics and stool examinations. Cross-sectional analysis revealed a statistically significant increase in the prevalence and intensity of S. mansoni infection with increasing numbers of geohelminth species (OR 2.5, 95% CI 1.38–3.64). Less than 20% of the strength of this association was contributed by socioeconomic status or environmental conditions. Thus, polyparasitism itself, as well as intrinsic host factors, appears to produce greater susceptibility to additional helminth infections. |
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Silva, Rita de Cássia RibeiroBarreto, Mauricio LimaAssis, Ana Marlucia de OliveiraSantana, Mônica Leila Portela deParraga, Isabel M.Reis, Mitermayer GalvãoBlanton, Ronald EdwardSilva, Rita de Cássia RibeiroBarreto, Mauricio LimaAssis, Ana Marlucia de OliveiraSantana, Mônica Leila Portela deParraga, Isabel M.Reis, Mitermayer GalvãoBlanton, Ronald Edward2011-07-06T19:47:15Z2011-07-06T19:47:15Z20070002-9637http://www.repositorio.ufba.br/ri/handle/ri/174977(4)Where prevalence of geohelminths and schistosomes is high, co-infections with multiple parasite species are common. Previous studies have shown that the presence of geohelminths either promotes or is a marker for greater prevalence and intensity of Schistosoma mansoni infections. Some of this apparent synergy may simply represent shared conditions for exposure, such as poor sanitation, and may not suggest a direct biologic interaction. We explored this question in a study of 13,279 school children in Jequié, Bahia, Brazil, with a survey of demographic characteristics and stool examinations. Cross-sectional analysis revealed a statistically significant increase in the prevalence and intensity of S. mansoni infection with increasing numbers of geohelminth species (OR 2.5, 95% CI 1.38–3.64). Less than 20% of the strength of this association was contributed by socioeconomic status or environmental conditions. Thus, polyparasitism itself, as well as intrinsic host factors, appears to produce greater susceptibility to additional helminth infections.Submitted by Rodrigo Meirelles (rodrigomei@ufba.br) on 2011-07-06T19:47:15Z No. of bitstreams: 1 artigo internac.1.livre 2007.pdf: 138357 bytes, checksum: bcc85d6dc499f41486d58af27a93da93 (MD5)Made available in DSpace on 2011-07-06T19:47:15Z (GMT). No. of bitstreams: 1 artigo internac.1.livre 2007.pdf: 138357 bytes, checksum: bcc85d6dc499f41486d58af27a93da93 (MD5) Previous issue date: 2007The Relative Influence of Polyparasitism, Environment, and Host Factors on Schistosome InfectionThe American Society of Tropical Medicine and Hygieneinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAinfo:eu-repo/semantics/openAccessORIGINALartigo internac.1.livre 2007.pdfartigo internac.1.livre 2007.pdfapplication/pdf138357https://repositorio.ufba.br/bitstream/ri/1749/1/artigo%20internac.1.livre%202007.pdfbcc85d6dc499f41486d58af27a93da93MD51LICENSElicense.txtlicense.txttext/plain1900https://repositorio.ufba.br/bitstream/ri/1749/2/license.txt71e65a6d5dacb237ac79a02b84866d45MD52TEXTartigo internac.1.livre 2007.pdf.txtartigo internac.1.livre 2007.pdf.txtExtracted texttext/plain18207https://repositorio.ufba.br/bitstream/ri/1749/3/artigo%20internac.1.livre%202007.pdf.txt85d9d71eff5e93a00101a033bfb5a301MD53ri/17492022-07-05 14:03:29.196oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:29Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false |
dc.title.pt_BR.fl_str_mv |
The Relative Influence of Polyparasitism, Environment, and Host Factors on Schistosome Infection |
dc.title.alternative.pt_BR.fl_str_mv |
The American Society of Tropical Medicine and Hygiene |
title |
The Relative Influence of Polyparasitism, Environment, and Host Factors on Schistosome Infection |
spellingShingle |
The Relative Influence of Polyparasitism, Environment, and Host Factors on Schistosome Infection Silva, Rita de Cássia Ribeiro |
title_short |
The Relative Influence of Polyparasitism, Environment, and Host Factors on Schistosome Infection |
title_full |
The Relative Influence of Polyparasitism, Environment, and Host Factors on Schistosome Infection |
title_fullStr |
The Relative Influence of Polyparasitism, Environment, and Host Factors on Schistosome Infection |
title_full_unstemmed |
The Relative Influence of Polyparasitism, Environment, and Host Factors on Schistosome Infection |
title_sort |
The Relative Influence of Polyparasitism, Environment, and Host Factors on Schistosome Infection |
author |
Silva, Rita de Cássia Ribeiro |
author_facet |
Silva, Rita de Cássia Ribeiro Barreto, Mauricio Lima Assis, Ana Marlucia de Oliveira Santana, Mônica Leila Portela de Parraga, Isabel M. Reis, Mitermayer Galvão Blanton, Ronald Edward |
author_role |
author |
author2 |
Barreto, Mauricio Lima Assis, Ana Marlucia de Oliveira Santana, Mônica Leila Portela de Parraga, Isabel M. Reis, Mitermayer Galvão Blanton, Ronald Edward |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Silva, Rita de Cássia Ribeiro Barreto, Mauricio Lima Assis, Ana Marlucia de Oliveira Santana, Mônica Leila Portela de Parraga, Isabel M. Reis, Mitermayer Galvão Blanton, Ronald Edward Silva, Rita de Cássia Ribeiro Barreto, Mauricio Lima Assis, Ana Marlucia de Oliveira Santana, Mônica Leila Portela de Parraga, Isabel M. Reis, Mitermayer Galvão Blanton, Ronald Edward |
description |
Where prevalence of geohelminths and schistosomes is high, co-infections with multiple parasite species are common. Previous studies have shown that the presence of geohelminths either promotes or is a marker for greater prevalence and intensity of Schistosoma mansoni infections. Some of this apparent synergy may simply represent shared conditions for exposure, such as poor sanitation, and may not suggest a direct biologic interaction. We explored this question in a study of 13,279 school children in Jequié, Bahia, Brazil, with a survey of demographic characteristics and stool examinations. Cross-sectional analysis revealed a statistically significant increase in the prevalence and intensity of S. mansoni infection with increasing numbers of geohelminth species (OR 2.5, 95% CI 1.38–3.64). Less than 20% of the strength of this association was contributed by socioeconomic status or environmental conditions. Thus, polyparasitism itself, as well as intrinsic host factors, appears to produce greater susceptibility to additional helminth infections. |
publishDate |
2007 |
dc.date.issued.fl_str_mv |
2007 |
dc.date.accessioned.fl_str_mv |
2011-07-06T19:47:15Z |
dc.date.available.fl_str_mv |
2011-07-06T19:47:15Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufba.br/ri/handle/ri/1749 |
dc.identifier.issn.none.fl_str_mv |
0002-9637 |
dc.identifier.number.pt_BR.fl_str_mv |
77(4) |
identifier_str_mv |
0002-9637 77(4) |
url |
http://www.repositorio.ufba.br/ri/handle/ri/1749 |
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eng |
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eng |
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info:eu-repo/semantics/openAccess |
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openAccess |
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