Geographical and behavioral risks associated with Schistosoma haematobium infection in an area of complex transmission

Parasites & Vectors
Teckla AngeloShona Wilson

Abstract

Schistosoma haematobium infection in endemic areas varies depending on the nature and complexity of the transmission networks present. Studies of micro-geographical transmission of S. haematobium infection indicate that discrepancy in prevalence between households is associated with diverse water contact behaviors and transmission that is restricted to particular sites harboring snail intermediate hosts. Detection of variations in the transmission sources with complex transmission networks of water bodies is required for optimization of malacological control. Longitudinal parasitological and malacological surveys were conducted to investigate geographical variations in transmission of urogenital schistosomiasis in Ikingwamanoti village, Shinyanga District, Tanzania. Urine samples were collected at baseline and follow-up time points from 282 school-aged children and examined microscopically for the presence of S. haematobium eggs. Malacological surveys involved collection of Bulinus nasutus every month from 30 sites. Snails were examined for patent infections. Global positioning system was used to map household distances from S. haematobium transmission sites, while water contact behavior was assessed using a questionnaire. Schi...Continue Reading

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Citations

Jul 23, 2019·Environmental Microbiology·Mohamed I Abdelwahab HassanMarc Thilo Figge
Jul 1, 2020·The Lancet Infectious Diseases·Abena S AmoahGovert J van Dam

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