Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/7543
Title: The relative influence of polyparasitism, environment, and host factors on schistosome infection.
Authors: Silva, Rita de Cássia Ribeiro
Barreto, Maurício Lima
Oliveira, Ana Marlucia de
Santana, Mônica Leila Portela de
Parraga, Isabel Martin
Reis, Mitermayer Galvão dos
Blanton, Ronald Edward
Affilliation: Federal University of Bahia.School of Nutrition. Salvador, BA, Brasil
Federal University of Bahia. Institute of Collective Health. Salvador, BA, Brasil
Federal University of Bahia.School of Nutrition. Salvador, BA, Brasil
Federal University of Bahia.School of Nutrition. Salvador, BA, Brasil
Department of Nutrition. Case Western Reserve University. Cleveland, OH, USA
Fundação Oswaldo Cruz. Centro de Pesquisa Gonçalo Moniz. Salvador, BA, Brasil
Center for Global Health and Diseases. Case Western Reserve University. Cleveland, OH, USA
Abstract: 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.
DeCS: Infecções por Nematoides/epidemiologia
Infecções por Nematoides/parasitologia
Esquistossomose/epidemiologia
Fatores Etários
Adolescente
Ancylostomatoidea
Animais
Ascaríase/epidemiologia
Ascaris lumbricoides/crescimento & desenvolvimento
Criança
Estudos Transversais
Fezes/parasitologia
Feminino
Infecções por Uncinaria/epidemiologia
Humanos
Masculino
Contagem de Ovos de Parasitas
Fatores Sexuais
Tricuríase/epidemiologia
Trichuris/crescimento & desenvolvimento
Issue Date: 2007
Publisher: American Society of Tropical Medicine and Hygiene
Citation: SILVA, R. C. T. et al. The relative influence of polyparasitism, environment, and host factors on schistosome infection. American Journal of Tropical Medicine and Hygiene, v. 77, n. 4, p. 672-675, 2007.
ISSN: 0002-9637
Copyright: open access
Appears in Collections:BA - IGM - Artigos de Periódicos

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