Strategies for schistosomiasis control targeting snail intermediate hosts: A review

Theodor Bilharz Research Institute

Bibliographic Information

Authors: Ibrahim A.M.

Journal: Biologia

Publisher: Springer Science and Business Media Deutschland GmbH

Publication Date: 22 April 2025

Volume / Issue: Volume 80 / Issue 7

Pages: 1693–1708

ISSN: 63088

DOI: 10.1007/s11756-025-01930-7

Scopus: View on Scopus

Document Type: Review


Authors and Affiliations

Ibrahim A.M., Medical Malacology Department, Theodor Bilharz Research Institute, Giza, Egypt


Abstract

Schistosomiasis is a devastating neglected tropical disease occurring in the middle- and lower-income areas. An approximated estimate of 251.4 million individuals have been infected with this disease, 90% of whom are Africans. Trematodes of the genus Schistosoma are responsible for the investigated infection. For the transmission of these trematodes, an intermediate host snail is required; Biomphalaria alexandrina is accountable for the intestinal Schistosoma mansoni, and Bulinus truncatus for urogenital S. haematobium in Africa. To summarize the various strategies implemented for eliminating schistosomiasis, this review was conducted. The most effective control strategies against schistosomiasis have been published by the World Health Organization (WHO) addressing the new neglected tropical diseases (NTDs) in the road map 2021–2030. To apply this control strategy, a combination of the following instructions has been issued: chemotherapy with praziquantel for treating the infected people; controlling snail populations via mollusciciding; health education; environmental management; adequate sanitation; and safe water supplies. The purpose of snail’s density elimination has an essential role in reducing the transmission of this disease. With the aim of eradicating schistosomiasis vector snails, efforts were exerted to detect a natural molluscicide originated from plants, algae and microorganisms. This approach is comprised of biological control- with either predators of snails, competitors or microbial organisms-, ecological control- like the physico-chemical factors- and molluscicidal control, either by synthetic chemical materials or plant molluscicides. Mollusciciding would be more effective in reducing snail density, especially botanical molluscicides that could be used as promising agents to control schistosomiasis. By merging these strategies, the elimination of schistosomiasis could be possible. © Plant Science and Biodiversity Centre, Slovak Academy of Sciences (SAS), Institute of Zoology, Slovak Academy of Sciences (SAS), Institute of Molecular Biology, Slovak Academy of Sciences (SAS) 2025.


Keywords

Biological control; Ecological control; Molluscicides; Schistosomiasis; Snail host


Citation Information

Scopus Citations: 2


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