CURRENT STATUS OF SCHISTOSOMIASIS AND ITS SNAIL HOSTS IN ASWAN GOVERNORATE, EGYPT

Authors

1 Department of Medical Parasitology, Faculty of Medicine, Assiut University

2 Department of Medical Parasitology, Faculty of Medicine, Aswan University

Abstract

Human schistosomiasis is one of the most important neglected tropical diseases. Ongoing control
measures have markedly decreased the incidence of the disease. This study determined the
prevalence of Schistosoma hematobium and S. mansoni infection among school children and adults
and the snail intermediate hosts in Aswan Governorate.
A cross-sectional study was carried out in four villages, El-Molcata, Karor, El-Mocla and Elkhatara.
Parasitological examination of 1200 inhabitants’ stool and urine samples was examined
using direct stained smear and Kato-Katz concentration methods as well as urine sedimentation
technique. Snail vectors were collected from different water streams, identified, and examined
for schistosomes infective stages by shedding and crushing methods. Statistical analysis was
conducted using SPSS, version 25.
The results showed that S. hematobium was 4.7% and S. mansoni was 1.25% among school
children and adults, with risk factors; gender and exposure to canal water. Also, the freshwater snails
were Bulinus truncatus, Biomphalaria alexandrina, Valvata nilotica, Physa acuta, & Lymnaea
truncatula. B. truncatus was widely distributed but did not show cercariae shedding.

Keywords

Journal of the Egyptian Society of Parasitology
Volume 51, Issue 3
December 2021
Pages 553-558

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