Foodborne trematodiases are infections with food-borne trematodes, including liver, lung, and intestinal flukes.
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name: Foodborne trematodiases
creation_date: '2026-01-26T15:56:41Z'
updated_date: '2026-04-11T01:06:52Z'
category: Infectious Disease
description: >-
Foodborne trematodiases are infections with food-borne trematodes, including
liver, lung, and intestinal flukes.
disease_term:
term:
id: MONDO:0015675
label: distomatosis
preferred_term: Foodborne trematodiases
parents:
- Helminth infection
- Neglected tropical disease
infectious_agent:
- name: Clonorchis sinensis
infectious_agent_term:
preferred_term: Clonorchis sinensis
term:
id: NCBITaxon:79923
label: Clonorchis sinensis
description: Liver fluke implicated in foodborne trematodiases.
evidence:
- reference: PMID:19597009
reference_title: "Food-borne trematodiases."
supports: SUPPORT
snippet: "An estimated 750 million people are at risk of infections with food-borne trematodes, which comprise liver flukes (Clonorchis sinensis, Fasciola gigantica, Fasciola hepatica, Opisthorchis felineus, and Opisthorchis viverrini), lung flukes (Paragonimus spp.), and intestinal flukes (e.g., Echinostoma spp., Fasciolopsis buski, and the heterophyids)."
explanation: The abstract lists C. sinensis among the major liver flukes.
- name: Fasciola gigantica
infectious_agent_term:
preferred_term: Fasciola gigantica
term:
id: NCBITaxon:46835
label: Fasciola gigantica
description: Liver fluke implicated in foodborne trematodiases.
evidence:
- reference: PMID:19597009
reference_title: "Food-borne trematodiases."
supports: SUPPORT
snippet: "An estimated 750 million people are at risk of infections with food-borne trematodes, which comprise liver flukes (Clonorchis sinensis, Fasciola gigantica, Fasciola hepatica, Opisthorchis felineus, and Opisthorchis viverrini), lung flukes (Paragonimus spp.), and intestinal flukes (e.g., Echinostoma spp., Fasciolopsis buski, and the heterophyids)."
explanation: The abstract lists F. gigantica among the major liver flukes.
- name: Fasciola hepatica
infectious_agent_term:
preferred_term: Fasciola hepatica
term:
id: NCBITaxon:6192
label: Fasciola hepatica
description: Liver fluke implicated in foodborne trematodiases.
evidence:
- reference: PMID:19597009
reference_title: "Food-borne trematodiases."
supports: SUPPORT
snippet: "An estimated 750 million people are at risk of infections with food-borne trematodes, which comprise liver flukes (Clonorchis sinensis, Fasciola gigantica, Fasciola hepatica, Opisthorchis felineus, and Opisthorchis viverrini), lung flukes (Paragonimus spp.), and intestinal flukes (e.g., Echinostoma spp., Fasciolopsis buski, and the heterophyids)."
explanation: The abstract lists F. hepatica among the major liver flukes.
- name: Opisthorchis felineus
infectious_agent_term:
preferred_term: Opisthorchis felineus
term:
id: NCBITaxon:147828
label: Opisthorchis felineus
description: Liver fluke implicated in foodborne trematodiases.
evidence:
- reference: PMID:19597009
reference_title: "Food-borne trematodiases."
supports: SUPPORT
snippet: "An estimated 750 million people are at risk of infections with food-borne trematodes, which comprise liver flukes (Clonorchis sinensis, Fasciola gigantica, Fasciola hepatica, Opisthorchis felineus, and Opisthorchis viverrini), lung flukes (Paragonimus spp.), and intestinal flukes (e.g., Echinostoma spp., Fasciolopsis buski, and the heterophyids)."
explanation: The abstract lists O. felineus among the major liver flukes.
- name: Opisthorchis viverrini
infectious_agent_term:
preferred_term: Opisthorchis viverrini
term:
id: NCBITaxon:6198
label: Opisthorchis viverrini
description: Liver fluke implicated in foodborne trematodiases.
evidence:
- reference: PMID:19597009
reference_title: "Food-borne trematodiases."
supports: SUPPORT
snippet: "An estimated 750 million people are at risk of infections with food-borne trematodes, which comprise liver flukes (Clonorchis sinensis, Fasciola gigantica, Fasciola hepatica, Opisthorchis felineus, and Opisthorchis viverrini), lung flukes (Paragonimus spp.), and intestinal flukes (e.g., Echinostoma spp., Fasciolopsis buski, and the heterophyids)."
explanation: The abstract lists O. viverrini among the major liver flukes.
- name: Paragonimus spp.
infectious_agent_term:
preferred_term: Paragonimus spp.
term:
id: NCBITaxon:34503
label: Paragonimus
description: Lung flukes implicated in foodborne trematodiases.
evidence:
- reference: PMID:19597009
reference_title: "Food-borne trematodiases."
supports: SUPPORT
snippet: "An estimated 750 million people are at risk of infections with food-borne trematodes, which comprise liver flukes (Clonorchis sinensis, Fasciola gigantica, Fasciola hepatica, Opisthorchis felineus, and Opisthorchis viverrini), lung flukes (Paragonimus spp.), and intestinal flukes (e.g., Echinostoma spp., Fasciolopsis buski, and the heterophyids)."
explanation: The abstract lists Paragonimus species as lung flukes.
- name: Echinostoma spp.
infectious_agent_term:
preferred_term: Echinostoma spp.
term:
id: NCBITaxon:27847
label: Echinostoma
description: Intestinal flukes implicated in foodborne trematodiases.
evidence:
- reference: PMID:19597009
reference_title: "Food-borne trematodiases."
supports: SUPPORT
snippet: "An estimated 750 million people are at risk of infections with food-borne trematodes, which comprise liver flukes (Clonorchis sinensis, Fasciola gigantica, Fasciola hepatica, Opisthorchis felineus, and Opisthorchis viverrini), lung flukes (Paragonimus spp.), and intestinal flukes (e.g., Echinostoma spp., Fasciolopsis buski, and the heterophyids)."
explanation: The abstract lists Echinostoma species among intestinal flukes.
transmission:
- name: Food-borne trematode exposure
description: Infection occurs via food-borne trematodes.
evidence:
- reference: PMID:19597009
reference_title: "Food-borne trematodiases."
supports: SUPPORT
snippet: "An estimated 750 million people are at risk of infections with food-borne trematodes, which comprise liver flukes (Clonorchis sinensis, Fasciola gigantica, Fasciola hepatica, Opisthorchis felineus, and Opisthorchis viverrini), lung flukes (Paragonimus spp.), and intestinal flukes (e.g., Echinostoma spp., Fasciolopsis buski, and the heterophyids)."
explanation: The abstract identifies these infections as food-borne trematodes.
references:
- reference: DOI:10.1007/s40588-024-00231-y
title: Foodborne Helminthiasis
found_in:
- Foodborne_Trematodiases-deep-research-falcon.md
findings:
- statement: 'of Review This review focuses on key foodborne helminths: providing an overview of their lifecycles and major transmission routes to humans, their geographical distribution, clinical manifestations, human health burden and control aspects.'
supporting_text: 'of Review This review focuses on key foodborne helminths: providing an overview of their lifecycles and major transmission routes to humans, their geographical distribution, clinical manifestations, human health burden and control aspects.'
evidence:
- reference: DOI:10.1007/s40588-024-00231-y
reference_title: Foodborne Helminthiasis
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: 'of Review This review focuses on key foodborne helminths: providing an overview of their lifecycles and major transmission routes to humans, their geographical distribution, clinical manifestations, human health burden and control aspects.'
explanation: Deep research cited this publication as relevant literature for Foodborne Trematodiases.
- reference: DOI:10.1128/cmr.00009-23
title: 'Clonorchiasis and opisthorchiasis: epidemiology, transmission, clinical features, morbidity, diagnosis, treatment, and control'
found_in:
- Foodborne_Trematodiases-deep-research-falcon.md
findings:
- statement: Clonorchis sinensis , Opisthorchis viverrini , and Opisthorchis felineus are important liver flukes that cause a considerable public health burden in eastern Asia, southeastern Asia, and eastern Europe, respectively.
supporting_text: Clonorchis sinensis , Opisthorchis viverrini , and Opisthorchis felineus are important liver flukes that cause a considerable public health burden in eastern Asia, southeastern Asia, and eastern Europe, respectively.
evidence:
- reference: DOI:10.1128/cmr.00009-23
reference_title: 'Clonorchiasis and opisthorchiasis: epidemiology, transmission, clinical features, morbidity, diagnosis, treatment, and control'
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Clonorchis sinensis , Opisthorchis viverrini , and Opisthorchis felineus are important liver flukes that cause a considerable public health burden in eastern Asia, southeastern Asia, and eastern Europe, respectively.
explanation: Deep research cited this publication as relevant literature for Foodborne Trematodiases.
- reference: DOI:10.1186/s40249-024-01265-6
title: 'Global, regional and national disease burden of food-borne trematodiases: projections to 2030 based on the Global Burden of Disease Study 2021'
found_in:
- Foodborne_Trematodiases-deep-research-falcon.md
findings:
- statement: 'Global, regional and national disease burden of food-borne trematodiases: projections to 2030 based on the Global Burden of Disease Study 2021'
supporting_text: Food-borne trematodiases (FBTs), mainly encompassing clonorchiasis, fascioliasis, fasciolopsiasis, opisthorchiasis, and paragonimiasis, is a neglected public health problem, particularly in the WHO South-East Asia and the Western Pacific regions.
evidence:
- reference: DOI:10.1186/s40249-024-01265-6
reference_title: 'Global, regional and national disease burden of food-borne trematodiases: projections to 2030 based on the Global Burden of Disease Study 2021'
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Food-borne trematodiases (FBTs), mainly encompassing clonorchiasis, fascioliasis, fasciolopsiasis, opisthorchiasis, and paragonimiasis, is a neglected public health problem, particularly in the WHO South-East Asia and the Western Pacific regions.
explanation: Deep research cited this publication as relevant literature for Foodborne Trematodiases.
- reference: DOI:10.1186/s40249-025-01315-7
title: One Health integrated strategies for sustainable control of Opisthorchis viverrini infections in rural endemic areas of Thailand
found_in:
- Foodborne_Trematodiases-deep-research-falcon.md
findings:
- statement: Opisthorchiasis, caused by Opisthorchis viverrini, poses a significant health risk in northeastern Thailand, increasing the prevalence of cholangiocarcinoma.
supporting_text: Opisthorchiasis, caused by Opisthorchis viverrini, poses a significant health risk in northeastern Thailand, increasing the prevalence of cholangiocarcinoma.
evidence:
- reference: DOI:10.1186/s40249-025-01315-7
reference_title: One Health integrated strategies for sustainable control of Opisthorchis viverrini infections in rural endemic areas of Thailand
supports: SUPPORT
evidence_source: OTHER
snippet: Opisthorchiasis, caused by Opisthorchis viverrini, poses a significant health risk in northeastern Thailand, increasing the prevalence of cholangiocarcinoma.
explanation: Deep research cited this publication as relevant literature for Foodborne Trematodiases.
- reference: DOI:10.1371/journal.pntd.0011073
title: 'Global prevalence of 4 neglected foodborne trematodes targeted for control by WHO: A scoping review to highlight the gaps'
found_in:
- Foodborne_Trematodiases-deep-research-falcon.md
findings:
- statement: Foodborne trematodiases (FBTs) are a group of trematodes targeted for control as part of the World Health Organization (WHO) road map for neglected tropical diseases from 2021 to 2030.
supporting_text: Foodborne trematodiases (FBTs) are a group of trematodes targeted for control as part of the World Health Organization (WHO) road map for neglected tropical diseases from 2021 to 2030.
evidence:
- reference: DOI:10.1371/journal.pntd.0011073
reference_title: 'Global prevalence of 4 neglected foodborne trematodes targeted for control by WHO: A scoping review to highlight the gaps'
supports: SUPPORT
evidence_source: OTHER
snippet: Foodborne trematodiases (FBTs) are a group of trematodes targeted for control as part of the World Health Organization (WHO) road map for neglected tropical diseases from 2021 to 2030.
explanation: Deep research cited this publication as relevant literature for Foodborne Trematodiases.
- reference: DOI:10.1371/journal.pntd.0013095
title: Large-scale epidemiology of opisthorchiasis in 21 provinces in Thailand based on diagnosis by fecal egg examination and urine antigen assay and analysis of risk factors for infection
found_in:
- Foodborne_Trematodiases-deep-research-falcon.md
findings:
- statement: Infection with the carcinogenic fish-borne trematode Opisthorchis viverrini, known as opisthorchiasis, is a major cause of biliary cancer (cholangiocarcinoma).
supporting_text: Infection with the carcinogenic fish-borne trematode Opisthorchis viverrini, known as opisthorchiasis, is a major cause of biliary cancer (cholangiocarcinoma).
evidence:
- reference: DOI:10.1371/journal.pntd.0013095
reference_title: Large-scale epidemiology of opisthorchiasis in 21 provinces in Thailand based on diagnosis by fecal egg examination and urine antigen assay and analysis of risk factors for infection
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Infection with the carcinogenic fish-borne trematode Opisthorchis viverrini, known as opisthorchiasis, is a major cause of biliary cancer (cholangiocarcinoma).
explanation: Deep research cited this publication as relevant literature for Foodborne Trematodiases.
- reference: DOI:10.3390/pathogens12060795
title: Opisthorchis viverrini—Current Understanding of the Neglected Hepatobiliary Parasite
found_in:
- Foodborne_Trematodiases-deep-research-falcon.md
findings:
- statement: Opisthorchiasis due to Opisthorchis viverrini infection continues to be a significant public healthcare concern in various subregions of Southeast Asia, particularly in Thailand, Laos, Cambodia, Myanmar, and Vietnam.
supporting_text: Opisthorchiasis due to Opisthorchis viverrini infection continues to be a significant public healthcare concern in various subregions of Southeast Asia, particularly in Thailand, Laos, Cambodia, Myanmar, and Vietnam.
evidence:
- reference: DOI:10.3390/pathogens12060795
reference_title: Opisthorchis viverrini—Current Understanding of the Neglected Hepatobiliary Parasite
supports: SUPPORT
evidence_source: OTHER
snippet: Opisthorchiasis due to Opisthorchis viverrini infection continues to be a significant public healthcare concern in various subregions of Southeast Asia, particularly in Thailand, Laos, Cambodia, Myanmar, and Vietnam.
explanation: Deep research cited this publication as relevant literature for Foodborne Trematodiases.
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Food-borne trematodiases are a grouped set of zoonotic trematode infections acquired by ingesting infective larval stages (metacercariae) in contaminated foods—principally freshwater fish (liver flukes), crustaceans (lung flukes), and aquatic plants/water (fascioliasis; and typically fasciolopsiasis) (liu2024globalregionaland pages 1-2, tidman2023globalprevalenceof pages 1-2, ortiz2024foodbornehelminthiasis pages 1-2). They are recognized by WHO as neglected tropical diseases (NTDs) and are a continuing public-health burden particularly in WHO Western Pacific and South‑East Asia regions (liu2024globalregionaland pages 1-2, tidman2023globalprevalenceof pages 1-2).
A 2024 GBD 2021-based analysis estimated 44,466,329 prevalent cases (95% UI 40,017,217–50,034,921) and 998,028 DALYs (95% UI 569,766–1,638,112) of food-borne trematodiases in 2021 (across 17 countries), with highest age-standardized prevalence and DALY rates in the Western Pacific region (liu2024globalregionaland pages 1-2). Major liver flukes (Opisthorchis viverrini and Clonorchis sinensis) are classified as carcinogenic to humans (IARC Group 1) and are linked to cholangiocarcinoma (CCA) risk (liu2024globalregionaland pages 1-2, qian2024clonorchiasisandopisthorchiasis pages 1-2).
| Scope / disease | Major causative trematodes | Key transmission / food vehicle | Main organ tropism / major complications | Diagnostics and treatment (2023–2025 literature) | Key quantitative burden / prevalence statistics |
|---|---|---|---|---|---|
| Food-borne trematodiases (FBTs), overall | Cluster including clonorchiasis, opisthorchiasis, fascioliasis, fasciolopsiasis, paragonimiasis; transmission via ingestion of larval stages in contaminated fish, crustaceans, or aquatic plants. WHO lists FBTs among neglected tropical diseases; major human pathology involves hepatobiliary, pulmonary, and intestinal systems. At least 99 trematode species can infect humans in broader human trematodiasis context (15 liver, 9 lung, 75 intestinal) (liu2024globalregionaland pages 1-2, tidman2023globalprevalenceof pages 1-2) | Raw/undercooked freshwater fish (clonorchiasis/opisthorchiasis), crustaceans (paragonimiasis), aquatic plants/water (fascioliasis), aquatic plants for fasciolopsiasis by lifecycle logic (liu2024globalregionaland pages 1-2, tidman2023globalprevalenceof pages 1-2, ortiz2024foodbornehelminthiasis pages 1-2) | Liver/bile ducts, lungs/pleura, intestines; severe outcomes include fibrosis, biliary disease, cholangiocarcinoma, chronic lung disease, and intestinal morbidity (liu2024globalregionaland pages 1-2, tidman2023globalprevalenceof pages 1-2, ortiz2024foodbornehelminthiasis pages 1-2) | Diagnostics across FBTs remain dominated by faecal parasitology/stool microscopy; sensitivity often limited. Species-specific serology, copro/urine antigen tests, and molecular assays are emerging. Main drugs: praziquantel for clonorchiasis/opisthorchiasis/paragonimiasis and triclabendazole for fascioliasis (tidman2023globalprevalenceof pages 1-2, tidman2023globalprevalenceof pages 9-10, qian2024clonorchiasisandopisthorchiasis pages 1-2) | GBD 2021 / 2024 analysis: 44,466,329 cases and 998,028 DALYs in 2021 across 17 countries; highest burden in Western Pacific; burden higher in males and peaks at 50–59 years; projected ASDR largely stable to 2030 (liu2024globalregionaland pages 1-2). 2024 review: ~75 million infected, 750 million at risk (ortiz2024foodbornehelminthiasis pages 1-2). 2023 scoping review: 93/224 countries reported ≥1 FBT; 26 likely co-endemic for ≥2 FBTs (tidman2023globalprevalenceof pages 1-2) |
| Clonorchiasis | Clonorchis sinensis (qian2024clonorchiasisandopisthorchiasis pages 1-2, qian2024clonorchiasisandopisthorchiasis pages 2-4) | Consumption of raw/undercooked freshwater fish containing metacercariae (qian2024clonorchiasisandopisthorchiasis pages 1-2, qian2024clonorchiasisandopisthorchiasis pages 2-4) | Intrahepatic bile ducts / hepatobiliary system; chronic infection linked to cholangitis, cholelithiasis, periductal fibrosis, and cholangiocarcinoma; C. sinensis is a Group 1 carcinogen for human CCA (liu2024globalregionaland pages 1-2, qian2024clonorchiasisandopisthorchiasis pages 1-2) | Stool microscopy widely used; immunologic assays for screening; molecular methods for species differentiation. Praziquantel is mainstay; tribendimidine is a candidate alternative under development (qian2024clonorchiasisandopisthorchiasis pages 1-2, qian2024clonorchiasisandopisthorchiasis pages 2-4) | 2024 review estimated ~13.24 million C. sinensis infections, including ~10.82 million in China (2015 estimate cited in review) (qian2024clonorchiasisandopisthorchiasis pages 2-4). 2023 scoping review found study prevalence up to 59.6% in Asia (tidman2023globalprevalenceof pages 1-2) |
| Opisthorchiasis | Opisthorchis viverrini, O. felineus (qian2024clonorchiasisandopisthorchiasis pages 1-2, qian2024clonorchiasisandopisthorchiasis pages 2-4) | Consumption of raw/undercooked cyprinid freshwater fish with metacercariae; culturally embedded fish dishes are major risk factor (qian2024clonorchiasisandopisthorchiasis pages 1-2, liau2023opisthorchisviverrini—currentunderstanding pages 6-7) | Bile ducts / hepatobiliary tract; complications include cholangitis, cholecystitis, cholelithiasis, advanced periductal fibrosis, cholangiocarcinoma (qian2024clonorchiasisandopisthorchiasis pages 1-2, liau2023opisthorchisviverrini—currentunderstanding pages 6-7) | Conventional gold standard remains stool microscopy/FECT. Newer diagnostics include urine antigen ELISA, gold-nanoparticle ELISA, smartphone fluorescent assay, immunochromatographic kits, and PCR assays (kopolrat2025largescaleepidemiologyof pages 1-2, kopolrat2025largescaleepidemiologyof pages 12-14, liau2023opisthorchisviverrini—currentunderstanding pages 6-7, kopolrat2025largescaleepidemiologyof pages 8-12). Praziquantel remains standard therapy (qian2024clonorchiasisandopisthorchiasis pages 1-2) | 2023 scoping review: study prevalence range 0.66%–88.7% in Asia (tidman2023globalprevalenceof pages 1-2). Greater Mekong meta-analysis 2024: pooled O. viverrini prevalence 21.11% overall; 34.06% in Laos, 18.19% Thailand, 10.48% Cambodia (qian2024clonorchiasisandopisthorchiasis pages 2-4). Thailand 2025 survey: urine ELISA prevalence 50.3% vs stool FECT 12.2%; urine ELISA sensitivity 91.6% vs FECT 21.9% against composite reference (kopolrat2025largescaleepidemiologyof pages 1-2, kopolrat2025largescaleepidemiologyof pages 12-14, kopolrat2025largescaleepidemiologyof pages 8-12). One Health Thailand 2025: human prevalence fell 14.1% → 0.9%, reinfection 17.4% → 9.7%, fish metacercariae 21.9% → 2.2%, dogs/cats 21.3% → 3.8%, raw fish consumption 52.4% → 12.3%, toilet use 31.7% → 87.1% (prakobwong2025onehealthintegrated pages 1-2) |
| Fascioliasis | Fasciola hepatica, F. gigantica (tidman2023globalprevalenceof pages 1-2, ortiz2024foodbornehelminthiasis pages 1-2) | Ingestion of contaminated aquatic plants and/or contaminated water; linked to poor sanitation and livestock-associated contamination (tidman2023globalprevalenceof pages 1-2, tidman2023globalprevalenceof pages 9-10) | Liver and biliary tree; acute migratory phase causes fever, abdominal pain/discomfort, nausea, diarrhoea, urticaria, cough; chronic disease causes bile duct/gallbladder/liver inflammation, fibrosis, cholangitis, biliary obstruction; ectopic CNS/ocular disease can occur (tidman2023globalprevalenceof pages 1-2, ortiz2024foodbornehelminthiasis pages 1-2, tidman2023globalprevalenceof pages 9-10) | Diagnostics: stool/coprological tests are common but have low sensitivity in acute or low-burden infection; serology is more sensitive but cannot reliably distinguish past vs active infection; combined parasitology + serology improves performance; coproantigen and PCR are newer options (tidman2023globalprevalenceof pages 9-10). Treatment: triclabendazole most reported, commonly 10 mg/kg single dose or 10 mg/kg/day for 2 days; nitazoxanide reported as alternative where needed (tidman2023globalprevalenceof pages 9-10) | 2023 global meta-analysis: pooled prevalence 4.5% overall; 9.0% South America, 4.8% Africa, 2.0% Asia; highest country estimates Bolivia 21%, Peru 11%, Egypt 6% (tidman2023globalprevalenceof pages 1-2, tidman2023globalprevalenceof pages 9-10). 2023 scoping review: highest reported study prevalence 24.77% in the Americas (tidman2023globalprevalenceof pages 1-2) |
| Fasciolopsiasis | Fasciolopsis buski is part of FBT scope in GBD-based 2024 analysis, though recent 2023–2025 evidence in retrieved set was sparse (liu2024globalregionaland pages 1-2) | Typically food-borne via aquatic plants carrying metacercariae; recent retrieved evidence set provides limited disease-specific 2023–2025 detail (liu2024globalregionaland pages 1-2) | Intestinal tropism; recent retrieved evidence set contains limited disease-specific complication detail compared with liver and lung flukes (liu2024globalregionaland pages 1-2) | No robust disease-specific 2023–2025 diagnostic/treatment advances were captured in the retrieved evidence set; likely still reliant on stool parasitology and praziquantel in practice, but this was not directly documented in the available context IDs (liu2024globalregionaland pages 1-2) | Included in 2024 global FBT burden framework, but specific 2023–2025 prevalence estimates were not available in the retrieved context IDs (liu2024globalregionaland pages 1-2) |
| Paragonimiasis | Paragonimus spp. (including P. westermani in many Asian settings) (tidman2023globalprevalenceof pages 1-2, tenorio2021monstersinour pages 2-4) | Consumption of raw/undercooked crab or other crustaceans containing metacercariae (tidman2023globalprevalenceof pages 1-2, tidman2023globalprevalenceof pages 9-10, tenorio2021monstersinour pages 2-4) | Lungs and pleura; causes chronic cough, hemoptysis/bloody sputum, chest pain, dyspnoea, pleuritis/pneumonia/bronchitis; can be ectopic including cerebral disease and is often misdiagnosed as tuberculosis (tidman2023globalprevalenceof pages 1-2, tenorio2021monstersinour pages 2-4) | Diagnostics include sputum and/or fecal egg examination, serology, and intradermal testing; serology can be more sensitive due to intermittent egg shedding (tidman2023globalprevalenceof pages 9-10). Praziquantel is the main reported treatment (tidman2023globalprevalenceof pages 1-2) | 2023 scoping review: least available data among WHO-targeted FBTs; highest reported study prevalence 14.9% in Africa (tidman2023globalprevalenceof pages 1-2). Older burden summarized in 2024 foodborne helminth review notes ongoing underestimation due to poor diagnostics/surveillance (ortiz2024foodbornehelminthiasis pages 1-2) |
Table: This table condenses the scope, causative parasites, transmission routes, organ tropism, diagnostics, treatment, and recent quantitative burden data for food-borne trematodiases. It highlights both global burden estimates and concrete implementation findings from recent Thailand diagnostic and One Health control studies.
FBTs are a cluster of trematode infections “mainly encompassing clonorchiasis, fascioliasis, fasciolopsiasis, opisthorchiasis, and paragonimiasis” (GBD-based framing) (liu2024globalregionaland pages 1-2). WHO’s NTD control framing emphasizes four key genera for control: Fasciola spp., Paragonimus spp., Clonorchis spp., Opisthorchis spp. (tidman2023globalprevalenceof pages 1-2).
The retrieved primary/review literature did not provide explicit ICD-10/ICD-11/MeSH/MONDO mappings for the group entity “foodborne trematodiases.” Therefore, these identifiers cannot be reliably asserted from the current evidence set.
The characterization above is derived from aggregated disease-level sources: GBD analyses (population modeling) and systematic/scoping reviews (liu2024globalregionaland pages 1-2, tidman2023globalprevalenceof pages 1-2, ortiz2024foodbornehelminthiasis pages 1-2), plus large field epidemiology and implementation studies (kopolrat2025largescaleepidemiologyof pages 1-2, prakobwong2025onehealthintegrated pages 1-2).
Cross-cutting risk factors identified in a 2023 WHO-focused scoping review include: - Proximity to rural/agricultural environments - Consumption of raw contaminated food - Limited water, hygiene and sanitation (WASH) (tidman2023globalprevalenceof pages 1-2)
In Thailand, a 2025 large-scale survey found individual-level infection risk correlated with demographic and behavioral factors (e.g., raw fish consumption was among predictive factors analyzed) (kopolrat2025largescaleepidemiologyof pages 1-2, kopolrat2025largescaleepidemiologyof pages 8-12).
Reported protective interventions were primarily programmatic rather than individual genetic: - Health education and awareness programs and preventive interventions that reduce raw-fish consumption and improve sanitation were associated with reduced transmission at community level (tidman2023globalprevalenceof pages 1-2, prakobwong2025onehealthintegrated pages 1-2).
No host genetic susceptibility loci or gene–environment interaction studies were captured in the retrieved evidence set; thus, this section cannot be populated with well-cited gene-level claims.
FBTs present heterogeneously depending on species and organ tropism.
Suggested HPO terms (examples) - Abdominal pain (HP:0002027) - Fever (HP:0001945) - Nausea (HP:0002018) - Diarrhea (HP:0002014) - Eosinophilia (HP:0001880) (not directly quantified in provided evidence, but common in helminth infections; not asserted beyond evidence here) - Cholangitis (HP:0005214) - Cholangiocarcinoma (HP:0002891)
A 2023 scoping review summarized typical manifestations: “chronic cough with bloody sputum, chest pain, dyspnoea” (tidman2023globalprevalenceof pages 1-2).
Suggested HPO terms (examples) - Cough (HP:0012735) - Hemoptysis (HP:0002105) - Chest pain (HP:0100749) - Dyspnea (HP:0002094)
Fasciolopsiasis is included within the FBT grouping in GBD-based analyses (liu2024globalregionaland pages 1-2), but disease-specific phenotype frequencies were not captured in the retrieved evidence set.
The evidence set did not include disease-specific EQ‑5D/SF‑36/PROMIS statistics for FBTs. Burden is instead reflected in DALYs at population level in GBD analyses (liu2024globalregionaland pages 1-2).
Not applicable in the standard Mendelian sense: FBTs are infections caused by parasites rather than inherited human genetic disorders.
Recent literature emphasizes improved diagnostic biomarkers for Opisthorchis viverrini infection: - A 2025 Thailand survey used urine antigen detection by monoclonal antibody ELISA for mass screening and showed markedly higher apparent prevalence than stool egg detection (kopolrat2025largescaleepidemiologyof pages 1-2, kopolrat2025largescaleepidemiologyof pages 8-12). - A 2023 review reports multiple novel assay formats (gold nanoparticle ELISA; smartphone fluorescent assay; immunochromatographic kit) with reported sensitivity/specificity in endemic settings (liau2023opisthorchisviverrini—currentunderstanding pages 6-7).
Epigenetics (cancer-associated, fluke-related) The retrieved evidence set includes cancer association at the level of “carcinogenic to humans” classification and CCA link (liu2024globalregionaland pages 1-2, qian2024clonorchiasisandopisthorchiasis pages 1-2), but did not provide specific epigenetic loci for FBTs themselves.
Environmental and societal drivers include sanitation, rural/agricultural proximity, and cultural consumption of raw/undercooked fish/crustaceans (tidman2023globalprevalenceof pages 1-2, qian2024clonorchiasisandopisthorchiasis pages 1-2).
Key etiologic agents highlighted in recent authoritative reviews include: - Liver flukes: Clonorchis sinensis, Opisthorchis viverrini, Opisthorchis felineus (qian2024clonorchiasisandopisthorchiasis pages 1-2) - Lung flukes: Paragonimus spp. (tidman2023globalprevalenceof pages 1-2) - Liver flukes (fascioliasis): Fasciola spp. (tidman2023globalprevalenceof pages 1-2, ortiz2024foodbornehelminthiasis pages 1-2)
A 2024 Clinical Microbiology Reviews article states chronic liver fluke infections are associated with liver/biliary complications “most importantly cholangiocarcinoma” (qian2024clonorchiasisandopisthorchiasis pages 1-2). A 2024 GBD-based paper notes O. viverrini and C. sinensis are “classified as carcinogenic to humans (IARC Group 1)” (liu2024globalregionaland pages 1-2).
Suggested GO biological processes (examples) - Inflammatory response (GO:0006954) - Fibrosis / extracellular matrix organization (GO:0030198) - Epithelial cell proliferation (GO:0050673)
Suggested cell types (Cell Ontology; examples) - Cholangiocyte / biliary epithelial cell (CL:1000488) - Hepatocyte (CL:0000182) - Macrophage (CL:0000235)
Suggested UBERON terms (examples) - Liver (UBERON:0002107) - Intrahepatic bile duct (UBERON:0003707) - Lung (UBERON:0002048)
Not specified in the retrieved evidence set.
FBTs are concentrated in endemic areas shaped by ecology and food practices; the 2024 GBD analysis highlights Western Pacific and South-East Asia prominence (liu2024globalregionaland pages 1-2), and the 2024 liver fluke review emphasizes eastern Asia/southeastern Asia/eastern Europe distribution by species (qian2024clonorchiasisandopisthorchiasis pages 1-2).
Not applicable (infectious etiology).
Urine antigen ELISA for Opisthorchis viverrini (large-scale field implementation) A 2025 Thai cross-sectional survey (n=20,322 enrolled; 19,465 urine; 18,929 feces) reported: - Prevalence by urine antigen ELISA: 50.3% vs stool FECT: 12.2% (kopolrat2025largescaleepidemiologyof pages 1-2, kopolrat2025largescaleepidemiologyof pages 8-12) - Sensitivity vs composite reference: urine ELISA 91.6% vs FECT 21.9% (kopolrat2025largescaleepidemiologyof pages 1-2, kopolrat2025largescaleepidemiologyof pages 12-14) This provides strong evidence that stool-only surveys can underestimate low-intensity infection prevalence in endemic settings (kopolrat2025largescaleepidemiologyof pages 1-2, kopolrat2025largescaleepidemiologyof pages 8-12).
Point-of-care/portable approaches (reviewed 2023) A 2023 review summarizes emerging assays including: - Gold nanoparticle–enhanced ELISA (reported sensitivity 93.81%, specificity 91.34%) - Smartphone-based fluorescent assay (reported sensitivity 84.88%, specificity 89.66%, accuracy 86.14%) - Immunochromatographic kit evaluated on sera (reported sensitivity 100%, specificity 98.3%) (liau2023opisthorchisviverrini—currentunderstanding pages 6-7)
Not systematically addressed in the retrieved evidence set. A practical implication noted in FBT literature is diagnostic underperformance and misclassification when relying solely on microscopy (tidman2023globalprevalenceof pages 9-10, kopolrat2025largescaleepidemiologyof pages 1-2).
Robust survival and mortality estimates specific to FBT infections were not captured in the retrieved evidence set. In the 2024 GBD analysis, DALYs were emphasized while recorded deaths were limited, indicating that modeled burden was dominated by disability rather than mortality in available data streams (liu2024globalregionaland pages 1-2).
For carcinogenic liver fluke infections, the major long-term adverse outcome is increased risk of cholangiocarcinoma (qian2024clonorchiasisandopisthorchiasis pages 1-2).
The 2023 WHO-focused scoping review summarizes commonly reported treatments: - Triclabendazole for fascioliasis (often 10 mg/kg once, or 10 mg/kg/day for 2 days) (tidman2023globalprevalenceof pages 9-10) - Praziquantel as primary treatment for paragonimiasis, clonorchiasis, opisthorchiasis (tidman2023globalprevalenceof pages 1-2)
A 2024 authoritative liver fluke review confirms: “The mainstay of control is preventive chemotherapy with praziquantel” (qian2024clonorchiasisandopisthorchiasis pages 1-2).
A 2025 One Health program in rural Thailand (2016–2022) integrated human screening/treatment with animal reservoir management, snail control, sanitation, and fish production interventions, achieving large measurable reductions: - Human prevalence 14.1% → 0.9% - Fish metacercariae 21.9% → 2.2% - Dogs/cats 21.3% → 3.8% - Raw fish consumption 52.4% → 12.3% - Toilet use 31.7% → 87.1% (prakobwong2025onehealthintegrated pages 1-2) This study is a concrete contemporary example of scalable control aligned with WHO road map priorities for integrated approaches (liu2024globalregionaland pages 1-2, prakobwong2025onehealthintegrated pages 1-2).
FBTs are zoonoses with animal reservoirs and intermediate hosts: - WHO scoping review: lifecycle involves a snail intermediate host and (except Fasciola) a secondary intermediate host; humans infected via contaminated food (tidman2023globalprevalenceof pages 1-2). - A 2024 liver fluke review states life cycles involve “animal reservoirs” and two intermediate hosts (snails and fish) (qian2024clonorchiasisandopisthorchiasis pages 1-2). - One Health implementation directly measured infection in dogs/cats and cyprinoid fish as reservoir/food-chain components (prakobwong2025onehealthintegrated pages 1-2).
(Explicit NCBI Taxon identifiers and species lists were not provided in the retrieved evidence set.)
The retrieved evidence set did not provide detailed descriptions of experimental model organisms for all FBTs. However, the strong evidence base for One Health control and for diagnostics includes population-scale human field studies (kopolrat2025largescaleepidemiologyof pages 1-2, prakobwong2025onehealthintegrated pages 1-2). (Laboratory animal model details would require additional targeted retrieval beyond this evidence set.)
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