Freshwater snails as the intermediate host of trematodes in Iran: a systematic review

Freshwater snails, as the first intermediate hosts of trematodes, can cause health hazards in animals and humans. Recently, the World Health Organization has included Iran in a list of 6 countries known to have serious problems with fascioliasis. In addition, cercarial dermatitis is a job-related di...

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Main Authors: Samira Dodangeh, Ahmad Daryani, Mehdi Sharif, Shirzad Gholami, Elham Kialashaki, Mahmood Moosazadeh, Shahabeddin Sarvi
Format: Article
Language:English
Published: Korean Society of Epidemiology 2019-01-01
Series:Epidemiology and Health
Subjects:
Online Access:http://e-epih.org/upload/pdf/epih-41-e2019001.pdf
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author Samira Dodangeh
Ahmad Daryani
Mehdi Sharif
Shirzad Gholami
Elham Kialashaki
Mahmood Moosazadeh
Shahabeddin Sarvi
author_facet Samira Dodangeh
Ahmad Daryani
Mehdi Sharif
Shirzad Gholami
Elham Kialashaki
Mahmood Moosazadeh
Shahabeddin Sarvi
author_sort Samira Dodangeh
collection DOAJ
description Freshwater snails, as the first intermediate hosts of trematodes, can cause health hazards in animals and humans. Recently, the World Health Organization has included Iran in a list of 6 countries known to have serious problems with fascioliasis. In addition, cercarial dermatitis is a job-related disease that is seen often in paddy workers, agricultural labourers, and fishermen in Iran, particularly in Mazandaran Province. Many studies have been conducted in Iran to survey larval trematodes in freshwater snails. However, to the best of our knowledge, no comprehensive data exist regarding infections in gastropods. Therefore, the aim of the present study was to estimate the types and prevalence of cercarial infections in snails in Iran. Electronic English-language and Persian-language databases were searched to identify 24 published articles reporting the prevalence of trematode infections in snails (9 species from 6 families) in various provinces of Iran. In total, 4.4% of gastropods were infected with the larval stages of trematodes. According to the studies reviewed in this meta-analysis‚ the highest infection prevalence was found in Radix auricularia (9.9%). Twelve larval species of trematodes were identified, and the highest prevalence of cercariae was found for Echinostomatidae cercariae (4.3%). Among the provinces explored, West Azerbaijan had the highest prevalence of infected snails (16.9%). The presence of trematodes in snails could pose a serious health problem in Iran. Thus, further studies are necessary to characterize these infections in other provinces.
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spelling doaj.art-75aeaaf525894374bef1d1da9b6615232022-12-22T01:36:35ZengKorean Society of EpidemiologyEpidemiology and Health2092-71932019-01-014110.4178/epih.e20190011016Freshwater snails as the intermediate host of trematodes in Iran: a systematic reviewSamira Dodangeh0Ahmad Daryani1Mehdi Sharif2Shirzad Gholami3Elham Kialashaki4Mahmood Moosazadeh5Shahabeddin Sarvi6 Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran Department of Medical Parasitology and Mycology, Toxoplasmosis Research Center, Mazandaran University of Medical Sciences, Sari, Iran Department of Medical Parasitology and Mycology, Toxoplasmosis Research Center, Mazandaran University of Medical Sciences, Sari, Iran Department of Medical Parasitology and Mycology, Toxoplasmosis Research Center, Mazandaran University of Medical Sciences, Sari, Iran Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran Health Sciences Research Center, Addiction Institute, Mazandaran University of Medical Sciences, Sari, Iran Department of Medical Parasitology and Mycology, Toxoplasmosis Research Center, Mazandaran University of Medical Sciences, Sari, IranFreshwater snails, as the first intermediate hosts of trematodes, can cause health hazards in animals and humans. Recently, the World Health Organization has included Iran in a list of 6 countries known to have serious problems with fascioliasis. In addition, cercarial dermatitis is a job-related disease that is seen often in paddy workers, agricultural labourers, and fishermen in Iran, particularly in Mazandaran Province. Many studies have been conducted in Iran to survey larval trematodes in freshwater snails. However, to the best of our knowledge, no comprehensive data exist regarding infections in gastropods. Therefore, the aim of the present study was to estimate the types and prevalence of cercarial infections in snails in Iran. Electronic English-language and Persian-language databases were searched to identify 24 published articles reporting the prevalence of trematode infections in snails (9 species from 6 families) in various provinces of Iran. In total, 4.4% of gastropods were infected with the larval stages of trematodes. According to the studies reviewed in this meta-analysis‚ the highest infection prevalence was found in Radix auricularia (9.9%). Twelve larval species of trematodes were identified, and the highest prevalence of cercariae was found for Echinostomatidae cercariae (4.3%). Among the provinces explored, West Azerbaijan had the highest prevalence of infected snails (16.9%). The presence of trematodes in snails could pose a serious health problem in Iran. Thus, further studies are necessary to characterize these infections in other provinces.http://e-epih.org/upload/pdf/epih-41-e2019001.pdfmeta-analysisprevalencesnailtrematodesiran
spellingShingle Samira Dodangeh
Ahmad Daryani
Mehdi Sharif
Shirzad Gholami
Elham Kialashaki
Mahmood Moosazadeh
Shahabeddin Sarvi
Freshwater snails as the intermediate host of trematodes in Iran: a systematic review
Epidemiology and Health
meta-analysis
prevalence
snail
trematodes
iran
title Freshwater snails as the intermediate host of trematodes in Iran: a systematic review
title_full Freshwater snails as the intermediate host of trematodes in Iran: a systematic review
title_fullStr Freshwater snails as the intermediate host of trematodes in Iran: a systematic review
title_full_unstemmed Freshwater snails as the intermediate host of trematodes in Iran: a systematic review
title_short Freshwater snails as the intermediate host of trematodes in Iran: a systematic review
title_sort freshwater snails as the intermediate host of trematodes in iran a systematic review
topic meta-analysis
prevalence
snail
trematodes
iran
url http://e-epih.org/upload/pdf/epih-41-e2019001.pdf
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