The Relative Influence of Polyparasitism, Environment, and Host Factors on Schistosome Infection

Detalhes bibliográficos
Autor(a) principal: Silva, Rita de Cássia Ribeiro
Data de Publicação: 2007
Outros Autores: Barreto, Mauricio Lima, Assis, Ana Marlucia de Oliveira, Santana, Mônica Leila Portela de, Parraga, Isabel M., Reis, Mitermayer Galvão, Blanton, Ronald Edward
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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spelling 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
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