Profiles of intestinal polyparasitism in a community of the Colombian Amazon region

Fernández-Niño, Julián Alfredo; Astudillo‐García, Claudia Iveth; Segura, Laura María; Gómez, Natalia; Salazar, Ángela Skantria; Tabares, Juan Hember; Restrepo, Cristian Andrés; Ruíz, Miguel A.; López, Myriam Consuelo; Reyes, Patricia

doi:10.7705/biomedica.v37i3.3395

Cited by 14 publications

(9 citation statements)

References 31 publications

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“…In an Argentine study, a frequency of 54% 22 was reported. In Cali, a frequency of 52.1% 23 , and in another study in the Amazon region, a frequency of 84% 24 , while in the present study it was 37.9%.…”

Section: Discusioncontrasting

confidence: 51%

Prevalence and risk factors related to intestinal parasitosis in children under 18 years of age in four populations of Colombia: a cross-sectional study

Bravo-González,

Villa-Tamayo,

Giraldo-Hinestroza

et al. 2023

Infect

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Objective: To identify the profile of intestinal parasitosis in children of four populations in the municipalities of Quibdó, Apartadó, Guachené, and Granada, Colombia, in 2012. Material and methods: A cross-sectional study was conducted using a secondary source of information, in which sociodemographic factors associated with the presence of parasites were analyzed in a univariate and bivariate manner. Results: A total of 240 individuals were analyzed. Two thirds of them were parasitized. The most frequent species were Entamoeba histolytica/dispar (22.9%), Endolimax nana (19.2%), Blastocystis hominins (19.2%), and Giardia intestinalis (20.8%). An association between inadequate excreta disposal (latrine or septic tank) and the presence of parasitic colonization was found with a prevalence ratio (PR) of 1.34 [1.14, 1.59] (p=0.005). Similarly, housing construction with wood or baharequewas 1.31 times more frequent in subjects with parasitic forms in their stool samples than those with brick houses.Discussion: A higher frequency of intestinal parasites was found for the different age groups compared to several reports worldwide and in Latin America. The most frequent species of parasites were similar to those reported in the literature.Conclusions: Isolated populations in Colombia, such as those studied, have a higher frequency of intestinal parasites than other populations.

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Section: Discusioncontrasting

confidence: 51%

Prevalence and risk factors related to intestinal parasitosis in children under 18 years of age in four populations of Colombia: a cross-sectional study

Bravo-González,

Villa-Tamayo,

Giraldo-Hinestroza

et al. 2023

Infect

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“…infection suggests multiple sources of infection. Mixed parasitic infections are highly predicted in rural areas due to the presence of multiple risk factors, as has been previously documented [44][45][46][47] . Consumption of contaminated water and unwashed vegetables, lack of fingernail trimming and hand washing, children playing in the dirt, barefoot walking, low socioeconomic status, lack of sanitation, and large numbers of family members sharing a single room have all been observed among the residents of West Ismailia 27,31,48,49 .…”

Section: Discussionmentioning

confidence: 70%

Subtypes and phylogenetic analysis of Blastocystis sp. isolates from West Ismailia, Egypt

Ahmed

El-Mahallawy

Mohamed

et al. 2022

Sci Rep

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In Egypt, Blastocystis sp. is not yet on the diagnostic list of parasitology reports, and information about its subtypes (STs) is scarce. This study investigated its prevalence and its STs/alleles, performed phylogenetic analysis, and considered the distribution of risk factors associated with Blastocystis sp. infections in West Ismailia, Ismailia governorate. Sociodemographic data, exposure factors, and previous parasitic infection status were recorded for symptomatic and asymptomatic individuals. Microscopy, polymerase chain reaction, sequencing, and phylogenetic analysis for Blastocystis sp. isolated from fecal samples were performed. Eighty Blastocystis sp.-infected individuals (15.3%) were examined. The age of the individuals ranged between 0.60 and 85.0 (mean 17.10 ± 15.70), the male/female ratio was 33/47, and the asymptomatic/symptomatic ratio was 55/25. The findings demonstrate clear evidence of direct contact with animals, poor water quality, and previous parasitic infections. Eleven samples yielded three Blastocystis STs (ST1: allele 4, ST2: alleles 9 and 12, and ST3: allele 34), with ST3 (45.5%) representing the most common subtype. Phylogenetic analysis with a robust bootstrap revealed three distinct clades for isolates of each subtype. This study updates the epidemiological knowledge of the distribution of Blastocystis sp. STs in Egypt and expands the current understanding of the prevalence, risk factor frequencies, and genetic diversity of this protist in the studied area.

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“…Infection by multiple parasite species confers increased susceptibility to other infections [46], and qPCR allows greater sensitivity in the identification of polyparasitism, making it a useful tool for the evaluation of public health interventions [47]. In Colombia, studies of polyparasitism have been carried out in indigenous communities and found that both helminths and protozoa were involved [48].…”

Section: Discussionmentioning

confidence: 99%

Molecular and descriptive epidemiology of intestinal protozoan parasites of children and their pets in Cauca, Colombia: a cross-sectional study

et al. 2019

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Background Parasitic infections, particularly those caused by protozoa, represent a considerable public health problem in developing countries. Blastocystis , Giardia duodenalis , Cryptosporidium spp. and the Entamoeba complex ( Entamoeba histolytica, Entamoeba dispar and Entamoeba moshkovskii) are the most common etiological causes of intestinal parasitic infections. Methods We carried out a descriptive cross-sectional study in school-age children attending a daycare institution in commune eight of Popayán, Cauca (Southwest Colombia). A total of 266 fecal samples were collected (258 from children and eight from pets). Blastocystis , G. duodenalis , Cryptosporidium spp. and the Entamoeba complex were identified by microscopy, quantitative real-time PCR (qPCR) and conventional PCR. The concordance of qPCR and microscopy was assessed using the Kappa index. Molecular characterization was conducted to identify Blastocystis subtypes (18S), G. duodenalis assemblages ( tpi and gdh ) and Cryptosporidium species/subtypes (18S and GP60). Potential associations between intestinal parasitism and sociodemographic factors were examined using bivariate analyses. Results A total of 258 fecal samples from children were analyzed by microscopy and 255 samples were analyzed by qPCR. The prevalence of Blastocystis was between 25.19% (microscopy) and 39.22% (qPCR), that of G. duodenalis was between 8.14% (microscopy) and 10.59% (qPCR), that of Cryptosporidium spp. was estimated at 9.8% (qPCR), and that of the Entamoeba complex was between 0.39% (conventional PCR) and 0.78% (microscopy). The concordance between microscopy and qPCR was very low. Blastocystis ST1 (alleles 4, 8, and 80), ST2 (alleles 11, 12, and 15), ST3 (alleles 31, 34, 36, 38,57, and 151), and ST4 (alleles 42 and 91), G. duodenalis assemblages AII, BIII, BIV and D, C. parvum subtype IIa and C. hominis subtype IbA9G3R2 were identified. The only identified member of the Entamoeba complex corresponded to E. histolytica . No statistically significant association was identified between parasitic infection and any sociodemographic variable. Conclusion This study revealed the usefulness of molecular methods to depict the transmission dynamics of parasitic protozoa in southwest Colombia. The presence of some of t...

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Profiles of intestinal polyparasitism in a community of the Colombian Amazon region

Abstract: Several intestinal polyparasitism profiles were found, although in most cases fewer than six parasites were involved. Better prevalence estimations and identification of determinant factors will allow to priorize and direct resources to control these infections.

Cited by 14 publications

References 31 publications

Prevalence and risk factors related to intestinal parasitosis in children under 18 years of age in four populations of Colombia: a cross-sectional study

Prevalence and risk factors related to intestinal parasitosis in children under 18 years of age in four populations of Colombia: a cross-sectional study

Subtypes and phylogenetic analysis of Blastocystis sp. isolates from West Ismailia, Egypt

Molecular and descriptive epidemiology of intestinal protozoan parasites of children and their pets in Cauca, Colombia: a cross-sectional study

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