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Focal persistence of soil-transmitted helminthiases in impoverished areas in the State of Piaui, Northeastern Brazil

Overview of attention for article published in Revista do Instituto de Medicina Tropical de São Paulo, June 2018
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Title
Focal persistence of soil-transmitted helminthiases in impoverished areas in the State of Piaui, Northeastern Brazil
Published in
Revista do Instituto de Medicina Tropical de São Paulo, June 2018
DOI 10.1590/s1678-9946201860024
Pubmed ID
Authors

Kerla Joeline Lima Monteiro, Elis Regina Chaves dos Reis, Beatriz Coronato Nunes, Lauren Hubert Jaeger, Deiviane Aparecida Calegar, Jéssica Pereira dos Santos, Alexander de Oliveira Maia, Samanta Cristina das Chagas Xavier, Márcio Neves Bóia, Filipe Anibal Carvalho-Costa

Abstract

This study aims to describe the prevalence, distribution, and factors associated with soil-transmitted helminthiases (STHs) in rural localities in Piaui, Brazil. Two cross-sectional surveys (n=605 subjects; 172 families) were carried out in order to obtain socio-demographic, anthropometric, spatial and parasitological data. Parasites were evaluated using Kato-Katz and centrifugal sedimentation techniques. Eggs were measured to assess infection with zoonotic Strongylida parasites. Kernel maps were constructed with Q-GIS. The prevalence of hookworm infection was 12.4% (75/605). Other helminthes found were Trichuris trichiura (n=1; 0.2%) and Hymenolepis nana (n=1; 0.2%). The hookworm positivity rate was significantly lower among subjects who had used albendazole when compared with individuals who had not used anthelmintics or had used antiprotozoal drugs in the last 6 months (8/134 [6.0%] vs. 59/415 [14.2%]; p=0.009). A total of 39/172 (22.7%) families had at least one infected member. The association between the number of dwellers and hookworm positivity in the family was present in a logistic regression multivariate model. Assessment of worm burdens showed 92.2% light, 6.2% moderate, and 1.6% heavy infections. Hookworm eggs (n=34) measured 57.2 - 75.4 µm in length and 36.4 - 44.2 µm in width (mean ± SD = 65.86 ± 4.66 µm L and 40.05 ± 1.99 µm W), commensurate with human hookworms. Hotspots suggest that transmission has a focal pattern. STHs persist in impoverished rural areas in Northeastern Brazil where currently available control strategies (mass drug administration) apparently do not allow the elimination of the infection.

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Mendeley readers

The data shown below were compiled from readership statistics for 41 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 41 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 10 24%
Student > Bachelor 8 20%
Other 4 10%
Student > Ph. D. Student 4 10%
Student > Postgraduate 2 5%
Other 1 2%
Unknown 12 29%
Readers by discipline Count As %
Agricultural and Biological Sciences 9 22%
Medicine and Dentistry 7 17%
Pharmacology, Toxicology and Pharmaceutical Science 2 5%
Nursing and Health Professions 2 5%
Biochemistry, Genetics and Molecular Biology 2 5%
Other 5 12%
Unknown 14 34%