Mammalian and Avian Larval Schistosomatids in Bangladesh: Molecular Characterization, Epidemiology, Molluscan Vectors, and Occurrence of Human Cercarial Dermatitis
Schistosomiasis is a neglected tropical disease (NTD) caused by blood flukes (<i>Schistosoma</i> spp.). Schistosomatids affect a wide array of vertebrate hosts, including humans. In the present study, multiple species of schistosomatids were identified by isolating schistosomatid cercari...
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MDPI AG
2022-10-01
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| author | Sharmin Shahid Labony Md. Shahadat Hossain Takeshi Hatta Anita Rani Dey Uday Kumar Mohanta Ausraful Islam Md. Shahiduzzaman Muhammad Mehedi Hasan Md. Abdul Alim Naotoshi Tsuji Anisuzzaman |
| author_facet | Sharmin Shahid Labony Md. Shahadat Hossain Takeshi Hatta Anita Rani Dey Uday Kumar Mohanta Ausraful Islam Md. Shahiduzzaman Muhammad Mehedi Hasan Md. Abdul Alim Naotoshi Tsuji Anisuzzaman |
| author_sort | Sharmin Shahid Labony |
| collection | DOAJ |
| description | Schistosomiasis is a neglected tropical disease (NTD) caused by blood flukes (<i>Schistosoma</i> spp.). Schistosomatids affect a wide array of vertebrate hosts, including humans. In the present study, multiple species of schistosomatids were identified by isolating schistosomatid cercariae (SC) from naturally infected snails. We also described different biotic and abiotic factors influencing SC infections in snails and reported human cercarial dermatitis (HCD) for the first time in Bangladesh. A total of 22,012 snails of seven species: <i>Lymnaea auricularia</i>, <i>L</i>. <i>luteola</i>, <i>Indoplanorbis exustus</i>, <i>Physa acuta</i>, <i>Viviparus bengalensis</i>, <i>Brotia</i> spp., and <i>Thiara</i> spp., were collected and examined. Among these snails, 581 (2.6%) belonging to five species: <i>L</i>. <i>luteola</i>, <i>L</i>. <i>auricularia</i>, <i>P</i>. <i>acuta</i>, <i>I</i>. <i>exustus</i>, and <i>V</i>. <i>bengalensis</i>, were infected with SC. The rate of infection was the highest for <i>L</i>. <i>luteola</i> (11.1%), followed by <i>L</i>. <i>auricularia</i> (5.3%), and was the lowest for <i>V</i>. <i>bengalensis</i> (0.4%). Prevalence in snails was the highest in September (16.8%), followed by October (9.5%) and November (8.8%), and was the lowest in colder months, such as January (1.8%) and February (2.1%). Infections with schistosomatids were more common in larger snails and snails collected from sunny areas. We confirmed the presence of <i>Schistosoma indicum</i>, <i>S</i>. <i>incognitum</i>, <i>S</i>. <i>nasale</i>, <i>S</i>. <i>spindale</i>, and <i>Trichobilharzia szidati</i> by PCR and sequencing. Through a questionnaire survey, we detected HCD in 214 (53.5%) individuals, and the infection rate was almost equally distributed across all professions. Collectively, the present results suggest that lymnaeid snails are the main vector for <i>Schistosoma</i> spp. prevalent in Bangladesh, and schistosomatids with zoonotic potential are also prevalent. |
| first_indexed | 2024-03-09T19:37:29Z |
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| spelling | doaj.art-52681fc4107341af82445f55a1b6fa002023-11-24T01:50:01ZengMDPI AGPathogens2076-08172022-10-011110121310.3390/pathogens11101213Mammalian and Avian Larval Schistosomatids in Bangladesh: Molecular Characterization, Epidemiology, Molluscan Vectors, and Occurrence of Human Cercarial DermatitisSharmin Shahid Labony0Md. Shahadat Hossain1Takeshi Hatta2Anita Rani Dey3Uday Kumar Mohanta4Ausraful Islam5Md. Shahiduzzaman6Muhammad Mehedi Hasan7Md. Abdul Alim8Naotoshi Tsuji9Anisuzzaman10Department of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, BangladeshDepartment of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, BangladeshDepartment of Parasitology and Tropical Medicine, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami, Sagamihara 252-0374, Kanagawa, JapanDepartment of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, BangladeshDepartment of Parasitology and Microbiology, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka 1207, BangladeshDepartment of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, BangladeshDepartment of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, BangladeshDepartment of Fisheries Technology, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh 2202, BangladeshDepartment of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, BangladeshDepartment of Parasitology and Tropical Medicine, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami, Sagamihara 252-0374, Kanagawa, JapanDepartment of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, BangladeshSchistosomiasis is a neglected tropical disease (NTD) caused by blood flukes (<i>Schistosoma</i> spp.). Schistosomatids affect a wide array of vertebrate hosts, including humans. In the present study, multiple species of schistosomatids were identified by isolating schistosomatid cercariae (SC) from naturally infected snails. We also described different biotic and abiotic factors influencing SC infections in snails and reported human cercarial dermatitis (HCD) for the first time in Bangladesh. A total of 22,012 snails of seven species: <i>Lymnaea auricularia</i>, <i>L</i>. <i>luteola</i>, <i>Indoplanorbis exustus</i>, <i>Physa acuta</i>, <i>Viviparus bengalensis</i>, <i>Brotia</i> spp., and <i>Thiara</i> spp., were collected and examined. Among these snails, 581 (2.6%) belonging to five species: <i>L</i>. <i>luteola</i>, <i>L</i>. <i>auricularia</i>, <i>P</i>. <i>acuta</i>, <i>I</i>. <i>exustus</i>, and <i>V</i>. <i>bengalensis</i>, were infected with SC. The rate of infection was the highest for <i>L</i>. <i>luteola</i> (11.1%), followed by <i>L</i>. <i>auricularia</i> (5.3%), and was the lowest for <i>V</i>. <i>bengalensis</i> (0.4%). Prevalence in snails was the highest in September (16.8%), followed by October (9.5%) and November (8.8%), and was the lowest in colder months, such as January (1.8%) and February (2.1%). Infections with schistosomatids were more common in larger snails and snails collected from sunny areas. We confirmed the presence of <i>Schistosoma indicum</i>, <i>S</i>. <i>incognitum</i>, <i>S</i>. <i>nasale</i>, <i>S</i>. <i>spindale</i>, and <i>Trichobilharzia szidati</i> by PCR and sequencing. Through a questionnaire survey, we detected HCD in 214 (53.5%) individuals, and the infection rate was almost equally distributed across all professions. Collectively, the present results suggest that lymnaeid snails are the main vector for <i>Schistosoma</i> spp. prevalent in Bangladesh, and schistosomatids with zoonotic potential are also prevalent.https://www.mdpi.com/2076-0817/11/10/1213schistosomiasisswimmers’ itchsnailshuman cercarial dermatitis<i>Trichobilharzia szidati</i> |
| spellingShingle | Sharmin Shahid Labony Md. Shahadat Hossain Takeshi Hatta Anita Rani Dey Uday Kumar Mohanta Ausraful Islam Md. Shahiduzzaman Muhammad Mehedi Hasan Md. Abdul Alim Naotoshi Tsuji Anisuzzaman Mammalian and Avian Larval Schistosomatids in Bangladesh: Molecular Characterization, Epidemiology, Molluscan Vectors, and Occurrence of Human Cercarial Dermatitis Pathogens schistosomiasis swimmers’ itch snails human cercarial dermatitis <i>Trichobilharzia szidati</i> |
| title | Mammalian and Avian Larval Schistosomatids in Bangladesh: Molecular Characterization, Epidemiology, Molluscan Vectors, and Occurrence of Human Cercarial Dermatitis |
| title_full | Mammalian and Avian Larval Schistosomatids in Bangladesh: Molecular Characterization, Epidemiology, Molluscan Vectors, and Occurrence of Human Cercarial Dermatitis |
| title_fullStr | Mammalian and Avian Larval Schistosomatids in Bangladesh: Molecular Characterization, Epidemiology, Molluscan Vectors, and Occurrence of Human Cercarial Dermatitis |
| title_full_unstemmed | Mammalian and Avian Larval Schistosomatids in Bangladesh: Molecular Characterization, Epidemiology, Molluscan Vectors, and Occurrence of Human Cercarial Dermatitis |
| title_short | Mammalian and Avian Larval Schistosomatids in Bangladesh: Molecular Characterization, Epidemiology, Molluscan Vectors, and Occurrence of Human Cercarial Dermatitis |
| title_sort | mammalian and avian larval schistosomatids in bangladesh molecular characterization epidemiology molluscan vectors and occurrence of human cercarial dermatitis |
| topic | schistosomiasis swimmers’ itch snails human cercarial dermatitis <i>Trichobilharzia szidati</i> |
| url | https://www.mdpi.com/2076-0817/11/10/1213 |
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