Lymphatic filariasis is a mosquito-borne nematode infection in which adult filarial worms inhabit lymphatic vessels, causing lymphatic dysfunction and chronic morbidity including lymphedema and hydrocele.
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name: Lymphatic filariasis
creation_date: '2026-01-26T03:01:01Z'
updated_date: '2026-04-11T01:06:52Z'
category: Infectious Disease
description: >-
Lymphatic filariasis is a mosquito-borne nematode infection in which adult
filarial worms inhabit lymphatic vessels, causing lymphatic dysfunction and
chronic morbidity including lymphedema and hydrocele.
disease_term:
term:
id: MONDO:0016075
label: filariasis
preferred_term: Filariasis
parents:
- Helminth infection
- Neglected tropical disease
- Filariasis
infectious_agent:
- name: Wuchereria bancrofti
infectious_agent_term:
preferred_term: Wuchereria bancrofti
term:
id: NCBITaxon:6293
label: Wuchereria bancrofti
description: Primary causative filarial nematode of lymphatic filariasis.
evidence:
- reference: PMID:38933431
reference_title: "A review of epidemiology of lymphatic filariasis in Nigeria."
supports: SUPPORT
snippet: The major etiologic agent is a nematode called Wuchereria bancrofti, but Brugia malayi and Brugia timoriare sometimes encountered as causative agents.
explanation: The review identifies Wuchereria bancrofti as the major etiologic agent.
- name: Brugia malayi
infectious_agent_term:
preferred_term: Brugia malayi
term:
id: NCBITaxon:6279
label: Brugia malayi
description: Secondary causative agent of lymphatic filariasis.
evidence:
- reference: PMID:38933431
reference_title: "A review of epidemiology of lymphatic filariasis in Nigeria."
supports: SUPPORT
snippet: The major etiologic agent is a nematode called Wuchereria bancrofti, but Brugia malayi and Brugia timoriare sometimes encountered as causative agents.
explanation: The review lists Brugia malayi as a causative agent.
- name: Brugia timori
infectious_agent_term:
preferred_term: Brugia timori
term:
id: NCBITaxon:42155
label: Brugia timori
description: Regional causative agent of lymphatic filariasis.
evidence:
- reference: PMID:38933431
reference_title: "A review of epidemiology of lymphatic filariasis in Nigeria."
supports: SUPPORT
snippet: The major etiologic agent is a nematode called Wuchereria bancrofti, but Brugia malayi and Brugia timoriare sometimes encountered as causative agents.
explanation: The review lists Brugia timori as a causative agent.
agent_life_cycle:
description: Filarial life cycle alternating between human lymphatics and mosquito vectors.
hosts:
- preferred_term: human
term:
id: NCBITaxon:9606
label: Homo sapiens
role: definitive host
- preferred_term: mosquito
term:
id: NCBITaxon:7157
label: Culicidae
role: intermediate host
vectors:
- mosquitoes (Culicidae)
life_cycle_stages:
- name: Adult worms in human tissues produce microfilariae
life_cycle_stage_term:
preferred_term: adult parasitic worm stage
term:
id: OPL:0000237
label: adult parasitic worm stage
description: Adult worms mate in human tissues and release microfilariae into the bloodstream.
evidence:
- reference: PMID:21413271
reference_title: "Filarial Nematodes."
supports: SUPPORT
snippet: The adult worms inhabit specific tissues where they mate and produce microfilariae, the characteristic tiny, thread-like larvae.
explanation: Adult filariae produce microfilariae in the human host.
- name: Microfilariae infect mosquito vectors and mature to infective larvae
description: Microfilariae are taken up by arthropod vectors and develop into infective larvae.
evidence:
- reference: PMID:21413271
reference_title: "Filarial Nematodes."
supports: SUPPORT
snippet: The microfilariae infect vector arthropods, in which they mature to infective larvae.
explanation: The abstract describes microfilariae maturing in vectors to infective larvae.
transmission:
- name: Mosquito-borne transmission
description: Mosquito vectors transmit infective larvae to human definitive hosts.
evidence:
- reference: PMID:38933431
reference_title: "A review of epidemiology of lymphatic filariasis in Nigeria."
supports: SUPPORT
snippet: Mosquitoes are the vectors while humans the definitive hosts respectively.
explanation: The review identifies mosquito vectors and human definitive hosts.
pathophysiology:
- name: Lymphatic vessel blockage and dysfunction
description: Adult lymphatic filariae in lymph vessels provoke blockage and host responses that impair lymphatic function and drive fibrosis.
locations:
- preferred_term: lymphatic vessel
term:
id: UBERON:0001473
label: lymphatic vessel
evidence:
- reference: PMID:21413271
reference_title: "Filarial Nematodes."
supports: SUPPORT
snippet: The adults of the lymphatic filariae inhabit lymph vessels, where blockage and host reaction can result in lymphatic inflammation and dysfunction, and eventually in lymphedema and fibrosis.
explanation: Adult worms in lymphatic vessels cause blockage, inflammation, dysfunction, and fibrosis.
- name: Lymphatic vessel remodeling and dilation
description: Adult parasites damage lymphatic valves and remodel lymphatic vessels, causing lymphatic dilation.
locations:
- preferred_term: lymphatic vessel
term:
id: UBERON:0001473
label: lymphatic vessel
evidence:
- reference: PMID:39739969
reference_title: "MicroRNAs secreted by the parasitic nematode Brugia malayi disrupt lymphatic endothelial cell integrity."
supports: SUPPORT
snippet: The adult parasites impact the integrity of lymphatic vessels and damage valves, leading to a remodeling of the lymphatic system and lymphatic dilation.
explanation: The abstract describes parasite-driven valve damage and lymphatic remodeling.
phenotypes:
- name: Lymphedema
category: Lymphatic
frequency: FREQUENT
phenotype_term:
preferred_term: Lymphedema
term:
id: HP:0001004
label: Lymphedema
evidence:
- reference: PMID:39739969
reference_title: "MicroRNAs secreted by the parasitic nematode Brugia malayi disrupt lymphatic endothelial cell integrity."
supports: SUPPORT
snippet: Chronic infections can develop into severe clinical manifestations, primarily lymphedema, hydrocoele, and elephantiasis.
explanation: Lymphedema is listed as a primary clinical manifestation.
- name: Hydrocele
category: Genitourinary
frequency: OCCASIONAL
phenotype_term:
preferred_term: Hydrocele testis
term:
id: HP:0000034
label: Hydrocele testis
evidence:
- reference: PMID:39739969
reference_title: "MicroRNAs secreted by the parasitic nematode Brugia malayi disrupt lymphatic endothelial cell integrity."
supports: SUPPORT
snippet: Chronic infections can develop into severe clinical manifestations, primarily lymphedema, hydrocoele, and elephantiasis.
explanation: Hydrocoele is listed as a primary clinical manifestation.
- name: Elephantiasis
category: Lymphatic
frequency: OCCASIONAL
description: Severe, chronic lymphedema with tissue overgrowth.
phenotype_term:
preferred_term: Lymphedema
term:
id: HP:0001004
label: Lymphedema
evidence:
- reference: PMID:21413271
reference_title: "Filarial Nematodes."
supports: SUPPORT
snippet: Repeated, prolonged infection with these worms can lead to elephantiasis, a buildup of excess tissue in the affected area.
explanation: Elephantiasis represents severe chronic lymphedema driven by repeated infection.
treatments:
- name: Mass drug administration with albendazole plus ivermectin or DEC
description: WHO-recommended antifilarial drug combinations used to interrupt transmission.
treatment_term:
preferred_term: Pharmacotherapy
term:
id: NCIT:C15986
label: Pharmacotherapy
therapeutic_agent:
- preferred_term: albendazole
term:
id: CHEBI:16664
label: albendazole
- preferred_term: ivermectin
term:
id: CHEBI:6078
label: ivermectin
evidence:
- reference: PMID:38933431
reference_title: "A review of epidemiology of lymphatic filariasis in Nigeria."
supports: SUPPORT
snippet: the World Health Organization recommended treatments for lymphatic filariasis include the use of Albendazole (400mg) twice per year in co-endemic areas with loa loa, Ivermectin (200mcg/kg) in combination with Albendazole (400mg) in areas that are co-endemic with onchocerciasis, ivermectin (200mcg/kg) with diethylcarbamazine citrate (DEC) (6mg/kg) and albendazole (400mg) in areas without onchocerciasis.
explanation: The abstract summarizes WHO-recommended antifilarial combinations for MDA.
references:
- reference: DOI:10.1007/s00436-024-08365-0
title: Differences of in vitro immune responses between patent and pre-patent Litomosoides sigmodontis–infected mice are independent of the filarial antigenic stimulus used
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: Lymphatic filariasis and onchocerciasis are neglected tropical diseases and cause significant public health problems in endemic countries, especially in sub-Saharan Africa.
supporting_text: Lymphatic filariasis and onchocerciasis are neglected tropical diseases and cause significant public health problems in endemic countries, especially in sub-Saharan Africa.
evidence:
- reference: DOI:10.1007/s00436-024-08365-0
reference_title: Differences of in vitro immune responses between patent and pre-patent Litomosoides sigmodontis–infected mice are independent of the filarial antigenic stimulus used
supports: SUPPORT
evidence_source: MODEL_ORGANISM
snippet: Lymphatic filariasis and onchocerciasis are neglected tropical diseases and cause significant public health problems in endemic countries, especially in sub-Saharan Africa.
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
- reference: DOI:10.1007/s40264-023-01338-9
title: 'Comparative Safety Surveillance of Triple (IDA) Versus Dual Therapy (DA) in Mass Drug Administration for Elimination of Lymphatic Filariasis in Kenya: A Cohort Event Monitoring Study'
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: 'Comparative Safety Surveillance of Triple (IDA) Versus Dual Therapy (DA) in Mass Drug Administration for Elimination of Lymphatic Filariasis in Kenya: A Cohort Event Monitoring Study'
supporting_text: 'Comparative Safety Surveillance of Triple (IDA) Versus Dual Therapy (DA) in Mass Drug Administration for Elimination of Lymphatic Filariasis in Kenya: A Cohort Event Monitoring Study'
- reference: DOI:10.1038/s42003-022-04391-9
title: Evaluating elimination thresholds and stopping criteria for interventions against the vector-borne macroparasitic disease, lymphatic filariasis, using mathematical modelling
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: We leveraged the ability of EPIFIL transmission models fit to field data to evaluate the use of the WHO Transmission Assessment Survey (TAS) for supporting Lymphatic Filariasis (LF) intervention stopping decisions.
supporting_text: We leveraged the ability of EPIFIL transmission models fit to field data to evaluate the use of the WHO Transmission Assessment Survey (TAS) for supporting Lymphatic Filariasis (LF) intervention stopping decisions.
evidence:
- reference: DOI:10.1038/s42003-022-04391-9
reference_title: Evaluating elimination thresholds and stopping criteria for interventions against the vector-borne macroparasitic disease, lymphatic filariasis, using mathematical modelling
supports: SUPPORT
evidence_source: COMPUTATIONAL
snippet: We leveraged the ability of EPIFIL transmission models fit to field data to evaluate the use of the WHO Transmission Assessment Survey (TAS) for supporting Lymphatic Filariasis (LF) intervention stopping decisions.
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
- reference: DOI:10.1055/a-0918-3678
title: Review of Dancing Parasites in Lymphatic Filariasis
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: Lymphatic filariasis is an infection transmitted by blood-sucking mosquitoes with filarial nematodes of the species Wuchereria bancrofti, Brugia malayi und B. timori.
supporting_text: Lymphatic filariasis is an infection transmitted by blood-sucking mosquitoes with filarial nematodes of the species Wuchereria bancrofti, Brugia malayi und B. timori.
evidence:
- reference: DOI:10.1055/a-0918-3678
reference_title: Review of Dancing Parasites in Lymphatic Filariasis
supports: SUPPORT
evidence_source: OTHER
snippet: Lymphatic filariasis is an infection transmitted by blood-sucking mosquitoes with filarial nematodes of the species Wuchereria bancrofti, Brugia malayi und B. timori.
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
- reference: DOI:10.1093/cid/ciae021
title: How Does the Proportion of Never Treatment Influence the Success of Mass Drug Administration Programs for the Elimination of Lymphatic Filariasis?
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: Mass drug administration (MDA) is the cornerstone for the elimination of lymphatic filariasis (LF).
supporting_text: Mass drug administration (MDA) is the cornerstone for the elimination of lymphatic filariasis (LF).
evidence:
- reference: DOI:10.1093/cid/ciae021
reference_title: How Does the Proportion of Never Treatment Influence the Success of Mass Drug Administration Programs for the Elimination of Lymphatic Filariasis?
supports: SUPPORT
evidence_source: OTHER
snippet: Mass drug administration (MDA) is the cornerstone for the elimination of lymphatic filariasis (LF).
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
- reference: DOI:10.1172/jci140853
title: Tetracyclines improve experimental lymphatic filariasis pathology by disrupting interleukin-4 receptor–mediated lymphangiogenesis
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: Tetracyclines improve experimental lymphatic filariasis pathology by disrupting interleukin-4 receptor–mediated lymphangiogenesis
supporting_text: Tetracyclines improve experimental lymphatic filariasis pathology by disrupting interleukin-4 receptor–mediated lymphangiogenesis
- reference: DOI:10.1186/s40249-024-01214-3
title: 'Efficacy of ivermectin and albendazole combination in suppressing transmission of lymphatic filariasis following mass administration in Tanzania: a prospective cohort study'
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: Preventive chemotherapy with ivermectin and albendazole (IA) in mass drug administration (MDA) programs for all at-risk populations is the core public health intervention to eliminate lymphatic filariasis (LF).
supporting_text: Preventive chemotherapy with ivermectin and albendazole (IA) in mass drug administration (MDA) programs for all at-risk populations is the core public health intervention to eliminate lymphatic filariasis (LF).
evidence:
- reference: DOI:10.1186/s40249-024-01214-3
reference_title: 'Efficacy of ivermectin and albendazole combination in suppressing transmission of lymphatic filariasis following mass administration in Tanzania: a prospective cohort study'
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Preventive chemotherapy with ivermectin and albendazole (IA) in mass drug administration (MDA) programs for all at-risk populations is the core public health intervention to eliminate lymphatic filariasis (LF).
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
- reference: DOI:10.1371/journal.pntd.0011347
title: 'Lymphatic filariasis endgame strategies: Using GEOFIL to model mass drug administration and targeted surveillance and treatment strategies in American Samoa'
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: American Samoa underwent seven rounds of mass drug administration (MDA) for lymphatic filariasis (LF) from 2000-2006, but subsequent surveys found evidence of ongoing transmission.
supporting_text: American Samoa underwent seven rounds of mass drug administration (MDA) for lymphatic filariasis (LF) from 2000-2006, but subsequent surveys found evidence of ongoing transmission.
evidence:
- reference: DOI:10.1371/journal.pntd.0011347
reference_title: 'Lymphatic filariasis endgame strategies: Using GEOFIL to model mass drug administration and targeted surveillance and treatment strategies in American Samoa'
supports: SUPPORT
evidence_source: COMPUTATIONAL
snippet: American Samoa underwent seven rounds of mass drug administration (MDA) for lymphatic filariasis (LF) from 2000-2006, but subsequent surveys found evidence of ongoing transmission.
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
- reference: DOI:10.1371/journal.pntd.0011882
title: 'The lymphatic filariasis treatment study landscape: A systematic review of study characteristics and the case for an individual participant data platform'
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: Lymphatic filariasis (LF) is a neglected tropical disease (NTD) targeted by the World Health Organization for elimination as a public health problem (EPHP).
supporting_text: Lymphatic filariasis (LF) is a neglected tropical disease (NTD) targeted by the World Health Organization for elimination as a public health problem (EPHP).
evidence:
- reference: DOI:10.1371/journal.pntd.0011882
reference_title: 'The lymphatic filariasis treatment study landscape: A systematic review of study characteristics and the case for an individual participant data platform'
supports: SUPPORT
evidence_source: OTHER
snippet: Lymphatic filariasis (LF) is a neglected tropical disease (NTD) targeted by the World Health Organization for elimination as a public health problem (EPHP).
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
- reference: DOI:10.1371/journal.pntd.0012236
title: Ongoing transmission of lymphatic filariasis in Samoa 4.5 years after one round of triple-drug mass drug administration
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: Lymphatic filariasis (LF) remains a significant global issue.
supporting_text: Lymphatic filariasis (LF) remains a significant global issue.
evidence:
- reference: DOI:10.1371/journal.pntd.0012236
reference_title: Ongoing transmission of lymphatic filariasis in Samoa 4.5 years after one round of triple-drug mass drug administration
supports: SUPPORT
evidence_source: OTHER
snippet: Lymphatic filariasis (LF) remains a significant global issue.
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
- reference: DOI:10.1371/journal.pntd.0012386
title: Field laboratory comparison of STANDARD Q Filariasis Antigen Test (QFAT) with Bioline Filariasis Test Strip (FTS) for the detection of Lymphatic Filariasis in Samoa, 2023
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: To monitor the progress of lymphatic filariasis (LF) elimination programmes, field surveys to assess filarial antigen (Ag) prevalence require access to reliable, user-friendly rapid diagnostic tests.
supporting_text: To monitor the progress of lymphatic filariasis (LF) elimination programmes, field surveys to assess filarial antigen (Ag) prevalence require access to reliable, user-friendly rapid diagnostic tests.
evidence:
- reference: DOI:10.1371/journal.pntd.0012386
reference_title: Field laboratory comparison of STANDARD Q Filariasis Antigen Test (QFAT) with Bioline Filariasis Test Strip (FTS) for the detection of Lymphatic Filariasis in Samoa, 2023
supports: SUPPORT
evidence_source: OTHER
snippet: To monitor the progress of lymphatic filariasis (LF) elimination programmes, field surveys to assess filarial antigen (Ag) prevalence require access to reliable, user-friendly rapid diagnostic tests.
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
- reference: DOI:10.1371/journal.pntd.0012538
title: Performance characteristics of STANDARD Q Filariasis Antigen test (QFAT) to detect filarial antigens of Wuchereria bancrofti in the field
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: Mapping, monitoring, and evaluation of the Global Programme to Eliminate Lymphatic Filariasis (GPELF) rely on high-throughput diagnostics.
supporting_text: Mapping, monitoring, and evaluation of the Global Programme to Eliminate Lymphatic Filariasis (GPELF) rely on high-throughput diagnostics.
evidence:
- reference: DOI:10.1371/journal.pntd.0012538
reference_title: Performance characteristics of STANDARD Q Filariasis Antigen test (QFAT) to detect filarial antigens of Wuchereria bancrofti in the field
supports: SUPPORT
evidence_source: OTHER
snippet: Mapping, monitoring, and evaluation of the Global Programme to Eliminate Lymphatic Filariasis (GPELF) rely on high-throughput diagnostics.
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
- reference: DOI:10.3389/fmicb.2024.1346068
title: Combinations of the azaquinazoline anti-Wolbachia agent, AWZ1066S, with benzimidazole anthelmintics synergise to mediate sub-seven-day sterilising and curative efficacies in experimental models of filariasis
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: Combinations of the azaquinazoline anti-Wolbachia agent, AWZ1066S, with benzimidazole anthelmintics synergise to mediate sub-seven-day sterilising and curative efficacies in experimental models of filariasis
supporting_text: Lymphatic filariasis and onchocerciasis are two major neglected tropical diseases that are responsible for causing severe disability in 50 million people worldwide, whilst veterinary filariasis (heartworm) is a potentially lethal parasitic infection of companion animals.
evidence:
- reference: DOI:10.3389/fmicb.2024.1346068
reference_title: Combinations of the azaquinazoline anti-Wolbachia agent, AWZ1066S, with benzimidazole anthelmintics synergise to mediate sub-seven-day sterilising and curative efficacies in experimental models of filariasis
supports: SUPPORT
evidence_source: MODEL_ORGANISM
snippet: Lymphatic filariasis and onchocerciasis are two major neglected tropical diseases that are responsible for causing severe disability in 50 million people worldwide, whilst veterinary filariasis (heartworm) is a potentially lethal parasitic infection of companion animals.
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
- reference: DOI:10.3390/tropicalmed8070333
title: 'Lymphatic Filariasis Elimination Status: Wuchereria bancrofti Infections in Human Populations after Five Effective Rounds of Mass Drug Administration in Zambia'
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: Lymphatic filariasis (LF), also commonly known as elephantiasis, is a neglected tropical disease (NTD) caused by filarial parasites.
supporting_text: Lymphatic filariasis (LF), also commonly known as elephantiasis, is a neglected tropical disease (NTD) caused by filarial parasites.
evidence:
- reference: DOI:10.3390/tropicalmed8070333
reference_title: 'Lymphatic Filariasis Elimination Status: Wuchereria bancrofti Infections in Human Populations after Five Effective Rounds of Mass Drug Administration in Zambia'
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Lymphatic filariasis (LF), also commonly known as elephantiasis, is a neglected tropical disease (NTD) caused by filarial parasites.
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
- reference: DOI:10.4269/ajtmh.23-0905
title: 'Managing Lymphedema Induced by Lymphatic Filariasis: Implementing and Improving Care at the Individual and Programmatic Levels'
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: Providing and improving the care of patients suffering from lymphedema remains an essential goal for the clinical management of populations affected by lymphatic filariasis.
supporting_text: Providing and improving the care of patients suffering from lymphedema remains an essential goal for the clinical management of populations affected by lymphatic filariasis.
evidence:
- reference: DOI:10.4269/ajtmh.23-0905
reference_title: 'Managing Lymphedema Induced by Lymphatic Filariasis: Implementing and Improving Care at the Individual and Programmatic Levels'
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Providing and improving the care of patients suffering from lymphedema remains an essential goal for the clinical management of populations affected by lymphatic filariasis.
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
- reference: DOI:10.4269/ajtmh.24-0313
title: Adherence to Hygiene Protocols and Doxycycline Therapy in Ameliorating Lymphatic Filariasis Morbidity in an Endemic Area Post-Interruption of Disease Transmission in Ghana
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: Filarial lymphedema (LE) remains a significant global problem despite the progress made toward elimination of lymphatic filariasis (LF).
supporting_text: Filarial lymphedema (LE) remains a significant global problem despite the progress made toward elimination of lymphatic filariasis (LF).
evidence:
- reference: DOI:10.4269/ajtmh.24-0313
reference_title: Adherence to Hygiene Protocols and Doxycycline Therapy in Ameliorating Lymphatic Filariasis Morbidity in an Endemic Area Post-Interruption of Disease Transmission in Ghana
supports: SUPPORT
evidence_source: OTHER
snippet: Filarial lymphedema (LE) remains a significant global problem despite the progress made toward elimination of lymphatic filariasis (LF).
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
- reference: DOI:10.4269/ajtmh.24-0337
title: 'Efficacy and Safety of Adding 6 Weeks of Doxycycline to the Essential Package of Care to Treat Filarial Lymphedema: A Double-Blind, Randomized, Controlled Trial in Southern India'
found_in:
- Lymphatic_Filariasis-deep-research-falcon.md
findings:
- statement: Finding additional ways to manage lymphedema due to lymphatic filariasis (LF) is a primary concern for the Global Program to Eliminate Lymphatic Filariasis.
supporting_text: Finding additional ways to manage lymphedema due to lymphatic filariasis (LF) is a primary concern for the Global Program to Eliminate Lymphatic Filariasis.
evidence:
- reference: DOI:10.4269/ajtmh.24-0337
reference_title: 'Efficacy and Safety of Adding 6 Weeks of Doxycycline to the Essential Package of Care to Treat Filarial Lymphedema: A Double-Blind, Randomized, Controlled Trial in Southern India'
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Finding additional ways to manage lymphedema due to lymphatic filariasis (LF) is a primary concern for the Global Program to Eliminate Lymphatic Filariasis.
explanation: Deep research cited this publication as relevant literature for Lymphatic Filariasis.
Question: You are an expert researcher providing comprehensive, well-cited information.
Provide detailed information focusing on: 1. Key concepts and definitions with current understanding 2. Recent developments and latest research (prioritize 2023-2024 sources) 3. Current applications and real-world implementations 4. Expert opinions and analysis from authoritative sources 5. Relevant statistics and data from recent studies
Format as a comprehensive research report with proper citations. Include URLs and publication dates where available. Always prioritize recent, authoritative sources and provide specific citations for all major claims.
Please provide a comprehensive research report on Lymphatic filariasis covering all of the disease characteristics listed below. This report will be used to populate a disease knowledge base entry. Be thorough and cite primary literature (PMID preferred) for all claims.
For each section, suggested databases/resources are listed. These are the first places you should search for information on each topic.
Search first: OMIM, Orphanet, ICD-10/ICD-11, MeSH, PubMed
Search first: PubMed, Cochrane Library, UpToDate, clinical guidelines, ClinVar, ClinGen, GWAS Catalog, PheGenI, CTD, CDC, WHO, epidemiological databases
Search first: PubMed, Cochrane Library, clinical trial databases, GWAS Catalog, gnomAD, WHO, CDC, nutrition databases
Search first: CTD, PubMed, PheGenI, GxE databases
Search first: HPO (Human Phenotype Ontology), OMIM, Orphanet, PubMed, clinicaltrials.gov, MedDRA, SNOMED CT, DECIPHER, LOINC
For each phenotype, provide: - Phenotype type: symptoms, clinical signs, physical manifestations, behavioral changes, or laboratory abnormalities
For symptoms/signs: HPO, OMIM, Orphanet, PubMed For behavioral changes: HPO, DSM, RDoC (Research Domain Criteria), PubMed For laboratory abnormalities: LOINC, SNOMED CT, LabTests Online, PubMed - Phenotype characteristics: Search first: OMIM, Orphanet, HPO, PubMed - Age of symptom onset (neonatal, childhood, adult-onset, late-onset) - Symptom severity (mild, moderate, severe, variable) - Symptom progression (stable, progressive, episodic, fluctuating) - Frequency among affected individuals (percentage or qualitative) - Quality of life impact: Effects on daily functioning and well-being (per-phenotype when possible) Search first: EQ-5D database, SF-36, WHO QOL databases, PubMed - Suggest HPO (Human Phenotype Ontology) terms for each phenotype
Search first: OMIM, ClinVar, HGMD, Ensembl, NCBI Gene
Search first: ENCODE, Roadmap Epigenomics, MethBase, DiseaseMeth
Search first: DECIPHER, ClinVar, ECARUCA, UCSC Genome Browser
Search first: CTD (Comparative Toxicogenomics Database), TOXNET, PubMed, EPA databases
Search first: CDC databases, WHO, PubMed, NHANES
Search first: NCBI Taxonomy, ViPR, BV-BRC, MicrobeDB, GIDEON
Search first: KEGG, Reactome, WikiPathways, PathBank, BioCyc
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Lymphatic filariasis (LF) is a mosquito-borne neglected tropical disease caused by filarial nematodes that reside in and damage the lymphatic system, producing a spectrum from asymptomatic infection to chronic morbidity such as lymphedema/elephantiasis and hydrocele. The global elimination strategy relies on (i) interrupting transmission through repeated mass drug administration (MDA) and (ii) morbidity management and disability prevention (MMDP), including the WHO Essential Package of Care (EPC) for lymphedema. Recent (2023–2024) work emphasizes (a) program “endgame” challenges (persistent hotspots, stopping criteria, and never-treated subpopulations), (b) real-world effectiveness gaps between microfilaria clearance and persistent antigenemia, (c) pharmacovigilance and safety surveillance for triple-drug MDA (IDA), (d) improved/alternative rapid antigen tests (QFAT vs FTS), and (e) short-course anti-Wolbachia macrofilaricide discovery using rodent models.
LF is a mosquito-borne disease caused by Wuchereria bancrofti, Brugia malayi, and Brugia timori; adult worms live in the lymphatics and produce microfilariae that circulate in blood and are taken up by mosquitoes to continue transmission. LF is a major cause of acquired (non-hereditary) lymphedema and can be visualized by ultrasound (“filarial dance sign”) in some settings. (dietrich2019reviewofdancing pages 1-2, kura2024howdoesthe pages 1-2)
Common alternative names include elephantiasis and Bancroftian filariasis (for W. bancrofti infection). The term “elephantiasis” is widely used but recognized as stigmatizing in patient-centered care contexts. (khaemba2023comparativesafetysurveillance pages 1-2, mackenzie2024managinglymphedemainduced pages 1-2)
Not recovered from the tool-retrieved full texts in this run: ICD-10, ICD-11, MeSH, MONDO, Orphanet, OMIM identifiers.
In the retrieved evidence, LF is consistently described as a neglected tropical disease targeted for elimination as a public health problem by WHO’s Global Programme to Eliminate Lymphatic Filariasis (GPELF). (freitas2024thelymphaticfilariasis pages 1-2, sharma2023evaluatingeliminationthresholds pages 1-2)
Most disease-level information below is from aggregated programmatic and research resources (systematic reviews, multi-country modeling, and national surveillance studies), supplemented with human clinical trials for morbidity management and field studies for diagnostics and MDA effectiveness/safety. (freitas2024thelymphaticfilariasis pages 1-2, kura2024howdoesthe pages 1-2, debrah2024adherencetohygiene pages 1-2, krishnasastry2024efficacyandsafety pages 1-2)
Causal infectious agents: Wuchereria bancrofti, Brugia malayi, and Brugia timori. (dietrich2019reviewofdancing pages 1-2, kura2024howdoesthe pages 1-2)
Transmission: by multiple mosquito genera (including Culex, Anopheles, Aedes, among others), varying by region/ecology. (dietrich2019reviewofdancing pages 1-2, shaw2023lymphaticfilariasisendgame pages 1-2)
Key mechanistic cofactor (endosymbiont): many filarial worms harbor the bacterial endosymbiont Wolbachia, which is a major therapeutic target (e.g., doxycycline and experimental anti-Wolbachia agents). (krishnasastry2024efficacyandsafety pages 1-2, hegde2024combinationsofthe pages 1-2)
Environmental/exposure risk: living in endemic areas with competent mosquito vectors; programmatically, the “never treated” fraction in MDA campaigns is a critical determinant of elimination feasibility. (kura2024howdoesthe pages 1-2, sharma2023evaluatingeliminationthresholds pages 1-2)
Programmatic risk factors: delayed MDA rounds or insufficient rounds/coverage can permit persistence or resurgence. In Samoa, a long gap after a single national IDA round was associated with persistent transmission signals years later. (mayfield2024ongoingtransmissionof pages 1-2)
Host factors for adverse events (AEs) during MDA: female sex, obesity, higher tablet counts, and pre-existing clinical symptoms were predictors of AEs after IDA in Kenya. (khaemba2023comparativesafetysurveillance pages 1-2)
High and repeated MDA coverage (and minimizing never-treated persons) is protective at the population level, reducing infection prevalence and likelihood of sustained transmission. Modeling indicates achieving elimination thresholds depends strongly on the “never treated” proportion. (kura2024howdoesthe pages 1-2)
The retrieved corpus did not provide robust, specific host genetic susceptibility loci or explicit gene–environment interaction analyses for LF (e.g., GWAS or candidate gene associations). This remains a gap in the evidence retrieved here.
LF manifests across an infection-to-disease continuum:
1) Lymphedema (limb swelling), chronic progressive
* Evidence: described as a major LF morbidity and a focus of EPC/MMDP. (mackenzie2024managinglymphedemainduced pages 1-2, krishnasastry2024efficacyandsafety pages 1-2)
* HPO suggestions: HP:0001004 Lymphedema, HP:0012378 Edema, HP:0000924 Swelling.
2) Elephantiasis (severe chronic lymphedema with dermal changes)
* Evidence: highlighted as hallmark, disfiguring clinical disease. (mackenzie2024managinglymphedemainduced pages 1-2)
* HPO suggestions: HP:0002607 Elephantiasis (if available), otherwise model as severe HP:0001004 with skin thickening terms.
3) Hydrocele
* Evidence: cited as a chronic morbidity; directly addressable via surgery. (khaemba2023comparativesafetysurveillance pages 1-2, mackenzie2024managinglymphedemainduced pages 1-2)
* HPO suggestion: HP:0000034 Hydrocele.
4) Acute adenolymphangitis (ADL) / acute attacks
* Evidence: EPC trials measure ADL frequency and QOL; doxycycline hypothesized to reduce attacks. (debrah2024adherencetohygiene pages 1-2, krishnasastry2024efficacyandsafety pages 1-2)
* HPO suggestions: HP:0001945 Fever, HP:0011134 Lymphangitis, HP:0002716 Lymphadenitis.
5) Microfilaremia / antigenemia as infection phenotypes
* Evidence: used as elimination metrics (e.g., mf prevalence thresholds, antigen tests). (fimbo2024efficacyofivermectin pages 1-2, kura2024howdoesthe pages 1-2)
* Not strictly HPO; better captured as laboratory abnormality terms; e.g., “microfilariae present in blood smear.”
Quantitative, phenotype-specific frequencies in infected populations were not comprehensively available from the retrieved texts, except program-level statements (e.g., LF as a major disability cause) and trial cohorts for lymphedema management. (khaemba2023comparativesafetysurveillance pages 1-2, krishnasastry2024efficacyandsafety pages 1-2)
The modeling paper explicitly notes chronic morbidity (hydrocele/lymphedema) is associated with “disability, pain, mental health problems, reduced productivity, and social stigmatisation.” (kura2024howdoesthe pages 1-2)
Recent MMDP trials in 2024 emphasize QoL as an outcome and conclude that EPC improves QoL and clinical condition, while adding doxycycline did not outperform placebo in the Kerala RCT. (krishnasastry2024efficacyandsafety pages 1-2)
LF is not a monogenic inherited disorder; causal “genes” are those of the parasites (and possibly Wolbachia) rather than human germline pathogenic variants.
The retrieved evidence base did not provide specific human causal variants, modifier genes, or population allele frequencies relevant to LF susceptibility.
Core environmental determinant is mosquito exposure in endemic regions. (dietrich2019reviewofdancing pages 1-2, kura2024howdoesthe pages 1-2)
The retrieved evidence did not provide strong causal links for lifestyle exposures (e.g., smoking, diet) specific to LF acquisition; however, obesity was an AE predictor in IDA safety surveillance. (khaemba2023comparativesafetysurveillance pages 1-2)
Primary pathogens: W. bancrofti, B. malayi, B. timori. (dietrich2019reviewofdancing pages 1-2, kura2024howdoesthe pages 1-2)
1) Mosquito inoculation introduces infective larvae, which mature to adult worms in lymphatic vessels. (dietrich2019reviewofdancing pages 1-2) 2) Adult worms and host responses drive lymphatic dysfunction and remodeling; microfilariae facilitate ongoing transmission. (shaw2023lymphaticfilariasisendgame pages 1-2) 3) Progressive lymphatic impairment predisposes to chronic lymphedema and episodes of acute inflammation (ADL). (mackenzie2024managinglymphedemainduced pages 1-2, krishnasastry2024efficacyandsafety pages 1-2)
An experimental LF model showed Brugia malayi infection induces lymphatic remodeling and impaired lymphatic drainage, with lymphatic insufficiency dependent on type 2 adaptive immunity, IL-4 receptor, and recruitment of CCR2+ monocytes and alternatively activated macrophages with a pro-lymphangiogenic phenotype; tetracycline-class drugs improved lymphatic function and modulated these immune pathways. (furlongsilva2021tetracyclinesimproveexperimental pages 1-3)
Suggested GO biological process terms (examples): lymphangiogenesis; inflammatory response; regulation of macrophage polarization; T cell activation; cytokine-mediated signaling pathway.
Suggested Cell Ontology (CL) terms (examples): monocyte (CCR2+), macrophage (alternatively activated), T cell (CD4+), lymphatic endothelial cell.
Doxycycline is used as an anti-Wolbachia therapy strategy; large recent RCTs for lymphedema management evaluated adjunctive doxycycline on top of EPC and found EPC benefits, while doxycycline showed limited/no additional effect on lymphedema stage progression in Ghana and Kerala. (debrah2024adherencetohygiene pages 1-2, krishnasastry2024efficacyandsafety pages 1-2)
The retrieved texts did not provide LF-specific single-cell/spatial multi-omics findings. However, LF transmission modeling and programmatic surveillance analytics are prominent “advanced methods” in the 2023–2024 literature (e.g., endgame modeling and stopping criteria). (shaw2023lymphaticfilariasisendgame pages 1-2, sharma2023evaluatingeliminationthresholds pages 1-2)
Lymphatic system (lymphatic vessels and nodes) is the primary site of adult worm infection and pathology. (dietrich2019reviewofdancing pages 1-2, mackenzie2024managinglymphedemainduced pages 1-2)
Key affected tissues include lymphatic endothelium and surrounding connective tissue, with inflammatory infiltrates (monocytes/macrophages, T cells) implicated in remodeling in experimental models. (furlongsilva2021tetracyclinesimproveexperimental pages 1-3)
Suggested UBERON terms (examples): lymphatic vessel, lymph node, lower limb, scrotum.
LF programs operationalize time in terms of repeated annual MDA rounds and post-MDA surveillance windows.
Key global program/burden indicators in recent sources: * Freitas et al. (Published 2024-01-16, PLOS NTDs; URL: https://doi.org/10.1371/journal.pntd.0011882) states: “Since 2000, more than 9 billion treatments of antifilarial medicines have been distributed through MDA programmes in 72 endemic countries and 17 countries have reached EPHP. Yet in 2021, nearly 900 million people still required MDA …” (freitas2024thelymphaticfilariasis pages 1-2) * Fimbo et al. (Published 2024-06, Infectious Diseases of Poverty; URL: https://doi.org/10.1186/s40249-024-01214-3) reports that in 2021 about 882 million people in 44 countries lived in areas requiring preventive chemotherapy. (fimbo2024efficacyofivermectin pages 1-2)
Illustrative country examples (program surveillance): * Zambia post-MDA pre-TAS (2021–2022): Wb antigen prevalence 0.14% and mf 0.0% across 79/80 districts after five rounds of DA MDA (with one district exception). (matapo2023lymphaticfilariasiselimination pages 1-2) * Samoa persistence after one round IDA: antigen prevalence above a 1% threshold in multiple PSUs and Mf positives present, indicating residual active infection years later. (mayfield2024ongoingtransmissionof pages 1-2)
The retrieved corpus includes Africa (Kenya, Tanzania, Zambia, Ghana), South Asia (India), and Pacific (Samoa) program and trial evidence. (fimbo2024efficacyofivermectin pages 1-2, khaemba2023comparativesafetysurveillance pages 1-2, mayfield2024ongoingtransmissionof pages 1-2, debrah2024adherencetohygiene pages 1-2, krishnasastry2024efficacyandsafety pages 1-2)
Two 2024 studies provide quantitative performance/operational evidence for the STANDARD Q Filariasis Antigen Test (QFAT) as an alternative to FTS.
India field performance (Published 2024-09, PLOS NTDs; URL: https://doi.org/10.1371/journal.pntd.0012538): In Karnataka, QFAT compared with FTS in 1,227 adults showed sensitivity 95.5%, specificity 99.7%, PPV 99.0%, NPV 98.5%, and near-perfect agreement (kappa 0.97). Both tests were positive for all 68 mf-positive samples, and QFAT had fewer invalid tests and was operationally easier per technicians. (dinesh2024performancecharacteristicsof pages 1-2)
Samoa field-laboratory comparison (Published 2024-08, PLOS NTDs; URL: https://doi.org/10.1371/journal.pntd.0012386): Concordance between QFAT and FTS reached 98.5% (kappa 0.96) after excluding invalid/indeterminate results; all 40 Mf-positive samples were Ag-positive by both tests. QFAT required a smaller blood volume and was preferred for usability/readability, but showed more result changes on delayed re-reading (next day). (scott2024fieldlaboratorycomparison pages 7-8, scott2024fieldlaboratorycomparison pages 5-7)
The retrieved evidence base did not provide a structured differential diagnosis list (e.g., podoconiosis, chronic venous insufficiency, heart/renal failure edema). However, LF lymphedema management papers emphasize that lymphedema can occur from diverse causes and that EPC-like care focuses on hygiene/infection prevention in affected limbs. (mackenzie2024managinglymphedemainduced pages 1-2, krishnasastry2024efficacyandsafety pages 1-2)
LF is primarily a chronic morbidity and disability condition rather than a high-mortality disease; burden is dominated by disability, stigma, and recurrent inflammatory episodes.
Programmatically, key “success” outcomes include reduction of mf prevalence below 1% and antigenemia below operational thresholds used for TAS decisions and post-MDA surveillance. Modeling cautions that operational stopping thresholds may not reliably reflect transmission interruption across heterogeneous settings. (kura2024howdoesthe pages 1-2, sharma2023evaluatingeliminationthresholds pages 1-2)
WHO/GPELF uses preventive chemotherapy (annual MDA) with regimens determined by co-endemicity: * IA (ivermectin + albendazole) in onchocerciasis co-endemic areas (noting IDA restrictions where onchocerciasis/loiasis risks exist). (kura2024howdoesthe pages 1-2) * DA (diethylcarbamazine + albendazole) elsewhere. (kura2024howdoesthe pages 1-2, sharma2023evaluatingeliminationthresholds pages 1-2) * IDA (ivermectin + diethylcarbamazine + albendazole) recommended in eligible settings to accelerate elimination. (khaemba2023comparativesafetysurveillance pages 1-2, mayfield2024ongoingtransmissionof pages 1-2)
Real-world effectiveness gap (Tanzania, 2024): IA cleared microfilariae quickly (90% day-7 clearance among mf-positive follow-ups) but antigenemia persisted at 6 months (CFA clearance 12.6%), supporting concern that adult-worm/antigen clearance lags and may require alternative approaches. (fimbo2024efficacyofivermectin pages 1-2)
Kenya community safety surveillance (Published online 2023-08-08, Drug Safety; URL: https://doi.org/10.1007/s40264-023-01338-9) found higher overall AE incidence with IDA than DA (27.3% vs 16.2%), but severe events were very rare and there were no serious life-threatening AEs; authors recommend integrating pharmacovigilance into MDA programs. (khaemba2023comparativesafetysurveillance pages 1-2)
A 2024 RCT and a 2024 field-experience report emphasize that EPC is beneficial and central to LF morbidity care.
EPC components (direct quote): The Kerala RCT abstract states “The WHO-recommended Essential Package of Care (EPC) consists of skin hygiene, elevation of affected limbs, exercise, protective shoe ware, wound care, and supportive therapy for acute phases.” (krishnasastry2024efficacyandsafety pages 1-2)
EPC outcomes: In the Kerala double-blind trial, adding 6 weeks of doxycycline did not improve outcomes versus placebo, but the study concludes: “Importantly, this rigorous trial confirmed that the EPC is of substantial benefit to lymphedema patients by reducing acute ADL and improving their QOL and clinical condition.” (krishnasastry2024efficacyandsafety pages 1-2)
Ghana RCT (2018–2020, published 2024-10, AJTMH; URL: https://doi.org/10.4269/ajtmh.24-0313): The abstract reports that doxycycline showed “no effect on LE stage progression,” while emphasizing “a strong benefit from adherence to a strict hygiene protocol,” with potential added benefit for preventing acute attacks. (debrah2024adherencetohygiene pages 1-2)
Anti-Wolbachia short-course combinations: A 2024 preclinical study tested the anti-Wolbachia small molecule AWZ1066S with benzimidazoles (albendazole or oxfendazole) across multiple rodent filariasis models (including Brugia and Litomosoides models). Combinations produced >90% Wolbachia depletion in 5 days and achieved sterilizing/curative effects and transmission blockade in some models. (hegde2024combinationsofthe pages 1-2)
Primary prevention is achieved via community-wide MDA and vector-related measures; secondary/tertiary prevention includes surveillance (TAS/pre-TAS) and morbidity care.
Modeling highlights that elimination success depends on sustained high annual coverage and limiting the “never treated” proportion; e.g., in Anopheles settings with 10% baseline mf, annual 80% coverage with IA could reach the 1% mf threshold within 10 years if NT <10%. (kura2024howdoesthe pages 1-2)
Filarial nematodes are important in both human and veterinary disease contexts (e.g., Dirofilaria in animals). In the retrieved evidence, the most relevant “other species” context is the use of non-human/rodent filariae for modeling LF biology and treatment development rather than naturally occurring LF disease in companion animals. (hegde2024combinationsofthe pages 1-2, lenz2024…onthe pages 28-32)
Because human LF parasites are not viable in immunocompetent mice, rodent models are essential for mechanistic and drug-development work. (arndts2024differencesofin pages 1-2)
Figure evidence supporting EPC composition and its organization into urgent/essential/important/selective components is shown in the retrieved EPC figure. (mackenzie2024managinglymphedemainduced media bc4ce439)
| Topic | Study/location | Design | Key numeric findings | Citations |
|---|---|---|---|---|
| Global LF program metrics | Freitas et al. 2024, global | Systematic review of LF treatment/MMDP studies | Since 2000, >9 billion antifilarial treatments distributed through MDA in 72 endemic countries; 17 countries had reached elimination as a public health problem (EPHP); in 2021 nearly 900 million people still required MDA | (freitas2024thelymphaticfilariasis pages 1-2) |
| IA effectiveness after MDA | Fimbo et al. 2024, Mkinga district, Tanzania | Community-based prospective cohort after ivermectin + albendazole (IA) MDA | 4,115 screened; baseline CFA positivity 5.8% (239/4115); among CFA+ individuals, 11/239 (4.6%) were mf+; day-7 mf clearance 90% (9/10; 95% CI 59.6–98.2%); 6-month CFA clearance 12.6% (23/183 became CFA−; 160/183, 87.4%, remained CFA+) | (fimbo2024efficacyofivermectin pages 1-2) |
| IDA vs DA safety | Khaemba et al. 2023, Kenya (Mombasa IDA; Kilifi DA) | Community-based observational cohort event-monitoring study during MDA | 20,421 eligible residents; ≥1 adverse event: 27.3% with IDA vs 16.2% with DA (p<0.0001); severe AEs were rare: 0.05% IDA vs 0.03% DA; most AEs mild/moderate; common AEs included dizziness 15.9% vs 5.9% and drowsiness 10.1% vs 2.6% | (khaemba2023comparativesafetysurveillance pages 1-2) |
| pre-TAS thresholds and post-MDA status | Matapo et al. 2023, Zambia | Post-MDA pre-transmission assessment survey after 5 effective annual DA rounds | WHO pre-TAS thresholds: <2% antigenaemia and <1% microfilaraemia after ≥5 effective MDA rounds; 47,235 tested (47,052 valid); observed W. bancrofti Ag prevalence 0.14% and mf prevalence 0.0% across 79/80 districts; all districts below Ag threshold except Chibombo | (matapo2023lymphaticfilariasiselimination pages 1-2) |
| Persistence after one round of IDA | Mayfield et al. 2024, Samoa | Community surveys in 8 PSUs, 4.5 years after one round of triple-drug MDA | Ag-positive participants found in 6/8 PSUs; Ag prevalence remained significantly above the 1% threshold in 4/8 PSUs; mf-positive participants detected in 5/8 PSUs, confirming residual active infection | (mayfield2024ongoingtransmissionof pages 1-2) |
| Never-treated proportion and elimination feasibility | Kura et al. 2024, modelled Anopheles/Culex settings | Individual-based stochastic transmission modelling | For Anopheles settings with baseline mf 10%, annual 80% eligible coverage with IA could reach 1% mf threshold within 10 years if never-treated (NT) proportion <10%; for Culex settings with baseline mf 5%, DA or IDA could achieve elimination if eligible coverage ≥80%; with baseline mf 10%, target achievable when annual coverage 80% and NT ≤15% | (kura2024howdoesthe pages 1-2) |
Table: This table summarizes high-value lymphatic filariasis program metrics and selected recent field and modelling results relevant to elimination, treatment effectiveness, and safety. It is useful as a compact evidence snapshot for knowledge-base population and comparative interpretation.
References
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