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Association between human cercarial dermatitis (HCD) and the occurrence of Trichibilarizia in duck and snail in main wetlands from Mazandaran Province, northern Iran

BACKGROUND: Avian schistosomes are considered as main causative agents of human cercarial dermatitis (HCD) in Iran. The study was conducted to determine bird schistosomes in their final and intermediate hosts, in main wetlands of Mazandaran. METHODS: A total of 255 domestic and wild ducks were colle...

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Autores principales: Kia lashaki, Elham, Gholami, Shirzad, Fakhar, Mahdi, Karamian, Mehdi, Daryani, Ahmad
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8058552/
https://www.ncbi.nlm.nih.gov/pubmed/33898795
http://dx.doi.org/10.1016/j.parepi.2021.e00211
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author Kia lashaki, Elham
Gholami, Shirzad
Fakhar, Mahdi
Karamian, Mehdi
Daryani, Ahmad
author_facet Kia lashaki, Elham
Gholami, Shirzad
Fakhar, Mahdi
Karamian, Mehdi
Daryani, Ahmad
author_sort Kia lashaki, Elham
collection PubMed
description BACKGROUND: Avian schistosomes are considered as main causative agents of human cercarial dermatitis (HCD) in Iran. The study was conducted to determine bird schistosomes in their final and intermediate hosts, in main wetlands of Mazandaran. METHODS: A total of 255 domestic and wild ducks were collected and the infection of nasal tissues of five (Anas platyrhynchos domesticus, Aythya ferina, Cairina moschata, Anas platyrhynchos and Spatula clypeata) species were analyzed using morphological techniques. Also, 1687 freshwater snails were collected and surveyed by cercarial shedding and crushing tests. Detection of HCD was performed for the presence of clinical symptoms of itching and maculopapular rashs by physical examination. RESULTS: Of 255 ducks, in 41 (16%) infection with nasal Trichibilarizia spp. were recognized by observing eggs and/or adult worms. The most infected ducks were Anas clypeata and Anas platyrhynchos domesticus. Overall, 0.17% of snails were infected with avian schistosomes. Also, clinical examination of 951 rice farmers revealed that 588 (61.82%) of them were suffered from HCD. CONCLUSION: Our data suggest that domestic ducks could play a prominent role as a reservoir host for establishing life cycle of Trichobilharzia in the area. Also, existence of domestic reservoir ducks and suitable snail hosts in ponds and paddy fields of this area, climate conditions of the wetlands in Mazandaran leads to a high incidence of HCD.
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spelling pubmed-80585522021-04-23 Association between human cercarial dermatitis (HCD) and the occurrence of Trichibilarizia in duck and snail in main wetlands from Mazandaran Province, northern Iran Kia lashaki, Elham Gholami, Shirzad Fakhar, Mahdi Karamian, Mehdi Daryani, Ahmad Parasite Epidemiol Control Original Research article BACKGROUND: Avian schistosomes are considered as main causative agents of human cercarial dermatitis (HCD) in Iran. The study was conducted to determine bird schistosomes in their final and intermediate hosts, in main wetlands of Mazandaran. METHODS: A total of 255 domestic and wild ducks were collected and the infection of nasal tissues of five (Anas platyrhynchos domesticus, Aythya ferina, Cairina moschata, Anas platyrhynchos and Spatula clypeata) species were analyzed using morphological techniques. Also, 1687 freshwater snails were collected and surveyed by cercarial shedding and crushing tests. Detection of HCD was performed for the presence of clinical symptoms of itching and maculopapular rashs by physical examination. RESULTS: Of 255 ducks, in 41 (16%) infection with nasal Trichibilarizia spp. were recognized by observing eggs and/or adult worms. The most infected ducks were Anas clypeata and Anas platyrhynchos domesticus. Overall, 0.17% of snails were infected with avian schistosomes. Also, clinical examination of 951 rice farmers revealed that 588 (61.82%) of them were suffered from HCD. CONCLUSION: Our data suggest that domestic ducks could play a prominent role as a reservoir host for establishing life cycle of Trichobilharzia in the area. Also, existence of domestic reservoir ducks and suitable snail hosts in ponds and paddy fields of this area, climate conditions of the wetlands in Mazandaran leads to a high incidence of HCD. Elsevier 2021-03-16 /pmc/articles/PMC8058552/ /pubmed/33898795 http://dx.doi.org/10.1016/j.parepi.2021.e00211 Text en © 2021 The Authors https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Original Research article
Kia lashaki, Elham
Gholami, Shirzad
Fakhar, Mahdi
Karamian, Mehdi
Daryani, Ahmad
Association between human cercarial dermatitis (HCD) and the occurrence of Trichibilarizia in duck and snail in main wetlands from Mazandaran Province, northern Iran
title Association between human cercarial dermatitis (HCD) and the occurrence of Trichibilarizia in duck and snail in main wetlands from Mazandaran Province, northern Iran
title_full Association between human cercarial dermatitis (HCD) and the occurrence of Trichibilarizia in duck and snail in main wetlands from Mazandaran Province, northern Iran
title_fullStr Association between human cercarial dermatitis (HCD) and the occurrence of Trichibilarizia in duck and snail in main wetlands from Mazandaran Province, northern Iran
title_full_unstemmed Association between human cercarial dermatitis (HCD) and the occurrence of Trichibilarizia in duck and snail in main wetlands from Mazandaran Province, northern Iran
title_short Association between human cercarial dermatitis (HCD) and the occurrence of Trichibilarizia in duck and snail in main wetlands from Mazandaran Province, northern Iran
title_sort association between human cercarial dermatitis (hcd) and the occurrence of trichibilarizia in duck and snail in main wetlands from mazandaran province, northern iran
topic Original Research article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8058552/
https://www.ncbi.nlm.nih.gov/pubmed/33898795
http://dx.doi.org/10.1016/j.parepi.2021.e00211
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