Spurious infection by Calodium hepaticum (Bancroft, 1983) Moravec, 1982 and intestinal parasites in forest reserve dwellers in Western Brazilian Amazon
Subsistence hunting is the main source of protein for forest reserve dwellers, contributing to the development of spurious infections by Calodium hepaticum, frequently associated with the consumption of the liver from wild mammals. The prevalence of infections by soil-transmitted helminths (STHs) an...
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Published in | Revista do Instituto de Medicina Tropical de São Paulo Vol. 64; pp. e2 - 7 |
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Main Authors | , , , , , , , , , , |
Format | Journal Article |
Language | English Portuguese |
Published |
Brazil
Instituto de Medicina Tropical de Sao Paulo
01.01.2022
Instituto de Medicina Tropical de São Paulo |
Subjects | |
Online Access | Get full text |
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Summary: | Subsistence hunting is the main source of protein for forest reserve dwellers, contributing to the development of spurious infections by Calodium hepaticum, frequently associated with the consumption of the liver from wild mammals. The prevalence of infections by soil-transmitted helminths (STHs) and intestinal protozoa is considered an indicator of the social vulnerability of a country, besides providing information on habits, customs and quality of life of a given population. Intestinal parasites mostly affect poor rural communities with limited access to clean water and adequate sanitation. This study reports the results of a parasitological survey carried out in 2017 and 2019, in two municipalities (Xapuri and Sena Madureira) in Acre State. Stool samples were collected from 276 inhabitants. Upon receipt, each sample was divided into two aliquots. Fresh samples without preservative were processed and examined by the Kato-Katz technique. Samples fixed in 10% formalin were processed by the spontaneous sedimentation and the centrifugal sedimentation techniques. Calodium hepaticum eggs were found in three stool samples. The overall STH prevalence was 44.9%. The hookworm prevalence (19.2%) was higher than that of Ascaris lumbricoides (2.5%) and Trichuris trichiura (0.7%), an unexpected finding for municipalities belonging to the Western Brazilian Amazon. When considering parasites transmitted via the fecal-oral route, Endolimax nana and Entamoeba coli showed the highest positivity rates, of 13% and 10.9%, respectively. This study is the first report of spurious infection by C. hepaticum among forest reserve dwellers that consume undercooked liver of lowland pacas. Additionally, this is the first report of Blastocystis sp. in Acre State. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 FBO, RRS and JRMS designed the experiments; FBO, TPDC, LBN, PEFT, JCM and LSS; FBO, TPDC and LBN performed the experiments; FBO and LBN obtained and anlyzed the data; RHN performed statistical analysis; MNB provided medical care to the participants of this study; FBO wrote the manuscript; FBA, RRS and JRMS revised the manuscript. All authors read and approved the final version. AUTHORS’ CONTRIBUTIONS |
ISSN: | 1678-9946 0036-4665 1678-9946 |
DOI: | 10.1590/S1678-9946202264002 |