Prevalence and genetic characterization of Dientamoeba fragilis in asymptomatic children attending daycare centers
ABSTRACT In order to provide additional data on the prevalence and genetic diversity of Dientamoeba fragilis in human populations, we conducted a study in children from low-income communities in Sao Paulo State, Brazil. Fecal samples from daycare center attendees up to 6 years old (n=156) and staff...
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Universidade de São Paulo (USP)
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ftdoajarticles:oai:doaj.org/article:9d1f3410537045f5be8f673bff15c44d 2024-09-09T19:25:36+00:00 Prevalence and genetic characterization of Dientamoeba fragilis in asymptomatic children attending daycare centers Ana Paula Oliveira-Arbex Érica Boarato David Simone Mario Cacciò Cátia Regina Branco da Fonseca Joelma Gonçalves Martin Cilmery Suemi Kurokawa Fabio Tosini Jayme Augusto Souza Neto Semíramis Guimarães 2021-05-01T00:00:00Z https://doi.org/10.1590/s1678-9946202163039 https://doaj.org/article/9d1f3410537045f5be8f673bff15c44d EN eng Universidade de São Paulo (USP) http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46652021000100603&tlng=en https://doaj.org/toc/1678-9946 1678-9946 doi:10.1590/s1678-9946202163039 https://doaj.org/article/9d1f3410537045f5be8f673bff15c44d Revista do Instituto de Medicina Tropical de São Paulo, Vol 63 (2021) Dientamoeba fragilis Prevalence Children PCR Genotypes Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 article 2021 ftdoajarticles https://doi.org/10.1590/s1678-9946202163039 2024-08-05T17:49:31Z ABSTRACT In order to provide additional data on the prevalence and genetic diversity of Dientamoeba fragilis in human populations, we conducted a study in children from low-income communities in Sao Paulo State, Brazil. Fecal samples from daycare center attendees up to 6 years old (n=156) and staff members (n=18) were submitted to PCR and sequencing of D. fragilis as well as to microscopic examination for the presence of other intestinal parasites. All children assessed were asymptomatic and 10.3% (16/156) were positive for D. fragilis. No worker was found to be positive. An association between Dientamoeba and coinfection with other intestinal parasites was observed. Concerning the genetic diversity, 14 and only two isolates were genotype 1 and genotype 2, respectively. Our findings outline interesting aspects: (1) asymptomatic children as carriers of Dientamoeba in communities in which environmental conditions ensure parasite transmission and, (2) association between Dientamoeba infection in young children and coinfection with other enteric parasites, reinforcing its transmission via the fecal–oral route. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Revista do Instituto de Medicina Tropical de São Paulo 63 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Dientamoeba fragilis Prevalence Children PCR Genotypes Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
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Dientamoeba fragilis Prevalence Children PCR Genotypes Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 Ana Paula Oliveira-Arbex Érica Boarato David Simone Mario Cacciò Cátia Regina Branco da Fonseca Joelma Gonçalves Martin Cilmery Suemi Kurokawa Fabio Tosini Jayme Augusto Souza Neto Semíramis Guimarães Prevalence and genetic characterization of Dientamoeba fragilis in asymptomatic children attending daycare centers |
topic_facet |
Dientamoeba fragilis Prevalence Children PCR Genotypes Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
description |
ABSTRACT In order to provide additional data on the prevalence and genetic diversity of Dientamoeba fragilis in human populations, we conducted a study in children from low-income communities in Sao Paulo State, Brazil. Fecal samples from daycare center attendees up to 6 years old (n=156) and staff members (n=18) were submitted to PCR and sequencing of D. fragilis as well as to microscopic examination for the presence of other intestinal parasites. All children assessed were asymptomatic and 10.3% (16/156) were positive for D. fragilis. No worker was found to be positive. An association between Dientamoeba and coinfection with other intestinal parasites was observed. Concerning the genetic diversity, 14 and only two isolates were genotype 1 and genotype 2, respectively. Our findings outline interesting aspects: (1) asymptomatic children as carriers of Dientamoeba in communities in which environmental conditions ensure parasite transmission and, (2) association between Dientamoeba infection in young children and coinfection with other enteric parasites, reinforcing its transmission via the fecal–oral route. |
format |
Article in Journal/Newspaper |
author |
Ana Paula Oliveira-Arbex Érica Boarato David Simone Mario Cacciò Cátia Regina Branco da Fonseca Joelma Gonçalves Martin Cilmery Suemi Kurokawa Fabio Tosini Jayme Augusto Souza Neto Semíramis Guimarães |
author_facet |
Ana Paula Oliveira-Arbex Érica Boarato David Simone Mario Cacciò Cátia Regina Branco da Fonseca Joelma Gonçalves Martin Cilmery Suemi Kurokawa Fabio Tosini Jayme Augusto Souza Neto Semíramis Guimarães |
author_sort |
Ana Paula Oliveira-Arbex |
title |
Prevalence and genetic characterization of Dientamoeba fragilis in asymptomatic children attending daycare centers |
title_short |
Prevalence and genetic characterization of Dientamoeba fragilis in asymptomatic children attending daycare centers |
title_full |
Prevalence and genetic characterization of Dientamoeba fragilis in asymptomatic children attending daycare centers |
title_fullStr |
Prevalence and genetic characterization of Dientamoeba fragilis in asymptomatic children attending daycare centers |
title_full_unstemmed |
Prevalence and genetic characterization of Dientamoeba fragilis in asymptomatic children attending daycare centers |
title_sort |
prevalence and genetic characterization of dientamoeba fragilis in asymptomatic children attending daycare centers |
publisher |
Universidade de São Paulo (USP) |
publishDate |
2021 |
url |
https://doi.org/10.1590/s1678-9946202163039 https://doaj.org/article/9d1f3410537045f5be8f673bff15c44d |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Revista do Instituto de Medicina Tropical de São Paulo, Vol 63 (2021) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46652021000100603&tlng=en https://doaj.org/toc/1678-9946 1678-9946 doi:10.1590/s1678-9946202163039 https://doaj.org/article/9d1f3410537045f5be8f673bff15c44d |
op_doi |
https://doi.org/10.1590/s1678-9946202163039 |
container_title |
Revista do Instituto de Medicina Tropical de São Paulo |
container_volume |
63 |
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