ArticleBiomedica : revista del Instituto Nacional de Salud2020
The Predominance of Giardia duodenalis AII sub-assemblage in young children from Salvador, Bahia, Brazil.
Article in Biomedica : revista del Instituto Nacional de Salud, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 13 citations in OpenAlex.
- Multilocus Oxford Nanopore sequencing reveals genetic diversity of Giardia duodenalis and Cryptosporidium spp. in surface and wastewater in Southwestern Colombia.Parasites & vectors · 2026Article
- Infectious etiology and indicators of malabsorption or intestinal injury in childhood diarrhea.Biomedica : revista del Instituto Nacional de Salud · 2024Article
- Genotyping and epidemiological distribution of diarrhea-causing isolates of Giardia duodenalis in southeastern part of West Bengal, India.Parasitology research · 2023Article
- High Diversity ofTropical medicine and infectious disease · 2023Article
- Genotypic and Epidemiologic Profiles of Giardia duodenalis in Four Brazilian Biogeographic RegionsMicroorganisms · 2022Article
- Molecular Genotyping ofIranian journal of parasitologyArticle
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Authors and funding
12 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
introductionGiardia duodenalis is an intestinal protozoan with a high prevalence in children of developing countries. Molecular studies revealed a great genetic diversity of G. duodenalis, with assemblages A and B found mainly in humans. Despite its importance, the information on the molecular epidemiology of human giardiasis is still limited in Brazil.
objectiveTo characterize G. duodenalis molecular isolates in children from Salvador, Bahia, Brazil. MATERIALS AND
methodsGiardia duodenalis positive fecal samples were obtained from 71 children from two day care centers and 39 users of a clinical analysis laboratory. Samples were analyzed by PCR-RFLP of the glutamate dehydrogenase (gdh) and beta-giardin genes and by the sequencing of beta-giardin.
resultsOf the 110 G. duodenalis samples, 80 (72.7%) amplified one or both target genes. Of these, 62 (77.5 %) were identified as assemblage A and 18 (22.5%) as assemblage B. The subassemblage AII was identified in 58.8% (n=47) of isolates followed by the sub-assemblage AI (18.8%, n=15), BIV (11.2%, n=9), and BIII (5.0%, n=4). The AII sub-assemblage was the most frequent in children of both day care centers whereas AI was found only in the group attended at the clinical laboratory. Sub-assemblage AII predominated in children under two years.
conclusionsThe higher frequency of AII sub-assemblage suggests that anthroponotic transmission is more common in Salvador, but that zoonotic transmission pathways are also present and a change in susceptibility to different molecular patterns of Giardia may occur during child growth.
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