ArticleThe American journal of tropical medicine and hygiene2015
Dramatic decrease in prevalence of soil-transmitted helminths and new insights into intestinal protozoa in children living in the Chaco region, Bolivia.
Article in The American journal of tropical medicine and hygiene, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.
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Who cites it
23 citing papers in PubMed, 1 synthesis or guideline pooled it, 47 citations in OpenAlex.
- The extent, nature, and pathogenic consequences of helminth polyparasitism in humans: A meta-analysis.PLoS neglected tropical diseases · 2019Pooled it
- Spatial and Molecular Epidemiology of Giardia intestinalis Deep in the Amazon, Brazil.PloS one · 2016Trial
- Socio-environmental maps as tools to characterize the risk of parasitosis in the horticultural peri-urban area of La Plata, Argentina.Journal of parasitic diseases : official organ of the Indian Society for Parasitology · 2025Article
- Molecular Prevalence and Subtypes Distribution ofTropical medicine and infectious disease · 2024Review
- Frequency of Gastrointestinal Parasites, Anemia, and Nutritional Status among Children from Different Geographical Regions of Bolivia.Journal of tropical medicine · 2023Article
- An update on the distribution ofHeliyon · 2022Article
- Long-Standing International Cooperation in Parasitology Research: A Summary of 35 Years of Activities in the Bolivian Chaco.Tropical medicine and infectious disease · 2022Review
- Using Routinely Collected Health Records to Identify the Fine-Resolution Spatial Patterns of Soil-Transmitted Helminth Infections in Rwanda.Tropical medicine and infectious disease · 2022Article
- Cross-sectional study on intestinal parasite infections in different ecological zones of the Department of La Paz, Bolivia.One health (Amsterdam, Netherlands) · 2021Article
- A community-based, cross-sectional study to assess interactions between income, nutritional status and enteric parasitism in two Brazilian cities: are we moving positively towards 2030?Journal of health, population, and nutrition · 2021Article
- Parasitic risk factors in migrant horticultural families from Bolivia settled in the rural area of La Plata, Buenos Aires, Argentina.One health (Amsterdam, Netherlands) · 2020Article
- Decline in Total Serum IgE and Soluble CD30 in the Context of Soil-Transmitted Helminth Decline in Bolivia.The American journal of tropical medicine and hygiene · 2020Article
- Infections withJournal of tropical medicine · 2020Article
- A summary of Blastocystis subtypes in North and South America.Parasites & vectors · 2019Review
- Scaling down of a deworming programme among school-age children after a thirty-year successful intervention in the Bolivian Chaco.Tropical medicine & international health : TM & IH · 2018Article
- Seroprevalence of Hepatitis A Virus, Hepatitis E Virus, andThe American journal of tropical medicine and hygiene · 2018Article
- Distribution and risk factors of Ascarididae and other geohelminths in the soil of Uberlandia, Minas Gerais, Brazil.Revista do Instituto de Medicina Tropical de Sao Paulo · 2018Article
- Seroepidemiological trend of strongyloidiasis in the Bolivian Chaco (1987-2013) in the absence of disease-specific control measures.Tropical medicine & international health : TM & IH · 2017Article
- Socioenvironmental conditions and intestinal parasitic infections in Brazilian urban slums: a cross-sectional study.Revista do Instituto de Medicina Tropical de Sao Paulo · 2017Article
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Authors and funding
9 authors at 3 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
We assessed the prevalence of intestinal parasites among 268 2-12-year-old children living in rural areas, small villages, and semi-urban areas of the Chaco region, south-eastern Bolivia. The overall parasitism was 69%. Only protozoa, helminths, or co-infections were observed in 89.2%, 5.9%, or 4.9% of the positive children, respectively. A significant progressive increase in overall parasite prevalence was found when passing from rural areas to small villages and semi-urban areas. The most commonly found species were Entamoeba coli (38.4%), Giardia intestinalis (37.7%), and Blastocystis spp. (16%). Hymenolepis nana was the most prevalent helminth (5.6%), followed by Ascaris lumbricoides and hookworms (1.5% and 0.4%) evidenced only in rural areas and in villages. Molecular diagnostics identified Blastocystis subtypes 9 and 2, and 5 infections by Entamoeba histolytica and 4 by Entamoeba dispar. The dramatic decrease in prevalence of soil-transmitted helminths with respect to that observed about 20 years ago (> 40%) evidences the success of the preventive chemotherapy intervention implemented in 1986. Health education and improved sanitation should be intensified to control protozoan infections.
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