Chagas disease (American trypanosomiasis) is a vector-borne protozoal infection caused by Trypanosoma cruzi, transmitted by triatomine insects, with an intracellular amastigote phase in human tissues and chronic cardiac morbidity.
name: Chagas disease
creation_date: '2026-01-26T15:56:41Z'
updated_date: '2026-04-11T00:41:29Z'
category: Infectious Disease
description: >-
Chagas disease (American trypanosomiasis) is a vector-borne protozoal infection
caused by Trypanosoma cruzi, transmitted by triatomine insects, with an
intracellular amastigote phase in human tissues and chronic cardiac morbidity.
disease_term:
term:
id: MONDO:0001444
label: Chagas disease
preferred_term: Chagas disease
parents:
- Neglected tropical disease
- Protozoal infection
infectious_agent:
- name: Trypanosoma cruzi
infectious_agent_term:
preferred_term: Trypanosoma cruzi
term:
id: NCBITaxon:5693
label: Trypanosoma cruzi
description: Kinetoplastid protozoan parasite that causes Chagas disease.
evidence:
- reference: PMID:34207491
reference_title: "Mechanisms Associated with Trypanosoma cruzi Host Target Cell Adhesion, Recognition and Internalization."
supports: SUPPORT
snippet: "Chagas disease is caused by the kinetoplastid parasite Trypanosoma cruzi"
explanation: The review identifies Trypanosoma cruzi as the causative agent.
agent_life_cycle:
description: Trypanosoma cruzi alternates between triatomine insect vectors and mammalian hosts.
hosts:
- preferred_term: human
term:
id: NCBITaxon:9606
label: Homo sapiens
role: definitive host
- preferred_term: triatomine bug
term:
id: NCBITaxon:70999
label: Triatominae
role: intermediate host
vectors:
- triatomine bugs (Triatominae)
life_cycle_stages:
- name: Epimastigote stage in triatomine vectors
life_cycle_stage_term:
preferred_term: Trypanosoma cruzi epimastigote stage
term:
id: OPL:0000223
label: Trypanosoma cruzi epimastigote stage
description: Epimastigotes are the non-infective forms in triatomine vectors.
evidence:
- reference: PMID:28919885
reference_title: "Trypanosoma cruzi Evades the Complement System as an Efficient Strategy to Survive in the Mammalian Host: The Specific Roles of Host/Parasite Molecules and Trypanosoma cruzi Calreticulin."
supports: SUPPORT
snippet: "Epimastigotes, the non-infective form of the parasite, present in triatomine arthropod vectors"
explanation: The abstract locates epimastigotes in triatomine vectors.
- name: Metacyclic trypomastigote stage in vector feces
life_cycle_stage_term:
preferred_term: Trypanosoma cruzi metacyclic trypomastigote stage
term:
id: OPL:0000131
label: Trypanosoma cruzi metacyclic trypomastigote stage
description: Metacyclic trypomastigotes in triatomine feces initiate infection.
evidence:
- reference: PMID:18512345
reference_title: "Host cell actin remodeling in response to Trypanosoma cruzi: trypomastigote versus amastigote entry."
supports: SUPPORT
snippet: "infected triatomines release in their feces highly motile and infective metacyclic trypomastigotes that may initiate infection"
explanation: The abstract describes infective metacyclic trypomastigotes released in vector feces.
- name: Bloodstream trypomastigote stage
life_cycle_stage_term:
preferred_term: Trypanosoma cruzi trypomastigote stage
term:
id: OPL:0000169
label: Trypanosoma cruzi trypomastigote stage
description: Trypomastigotes circulate in host blood as infective forms.
evidence:
- reference: PMID:28919885
reference_title: "Trypanosoma cruzi Evades the Complement System as an Efficient Strategy to Survive in the Mammalian Host: The Specific Roles of Host/Parasite Molecules and Trypanosoma cruzi Calreticulin."
supports: SUPPORT
snippet: "trypomastigotes, the infective form, present in host bloodstream"
explanation: The abstract identifies trypomastigotes in host bloodstream.
- name: Intracellular amastigote stage
life_cycle_stage_term:
preferred_term: Trypanosoma cruzi amastigote stage
term:
id: OPL:0000064
label: Trypanosoma cruzi amastigote stage
description: Amastigotes differentiate in host cells and replicate by binary fission.
evidence:
- reference: PMID:18512345
reference_title: "Host cell actin remodeling in response to Trypanosoma cruzi: trypomastigote versus amastigote entry."
supports: SUPPORT
snippet: "differentiate into amastigotes that replicate by binary fission"
explanation: The abstract reports amastigote differentiation and replication in host cells.
transmission:
- name: Triatomine fecal contamination during blood feeding
description: Infected triatomines release metacyclic trypomastigotes in feces during blood meals.
evidence:
- reference: PMID:18512345
reference_title: "Host cell actin remodeling in response to Trypanosoma cruzi: trypomastigote versus amastigote entry."
supports: SUPPORT
snippet: "While feeding on host's blood, infected triatomines release in their feces highly motile and infective metacyclic trypomastigotes that may initiate infection."
explanation: The abstract links transmission to triatomine blood feeding and fecal contamination.
pathophysiology:
- name: Intracellular amastigote replication in host cells
description: Metacyclic trypomastigotes invade host cells and differentiate into amastigotes that proliferate intracellularly.
evidence:
- reference: PMID:18512345
reference_title: "Host cell actin remodeling in response to Trypanosoma cruzi: trypomastigote versus amastigote entry."
supports: SUPPORT
snippet: "Metacyclic trypomastigotes promptly invade host cells (including gastric mucosa) and once free in the cytoplasm, differentiate into amastigotes that replicate by binary fission."
explanation: The abstract describes intracellular invasion and amastigote replication.
phenotypes:
- name: Cardiomyopathy
category: Cardiovascular
frequency: OCCASIONAL
phenotype_term:
preferred_term: Cardiomyopathy
term:
id: HP:0001638
label: Cardiomyopathy
evidence:
- reference: PMID:28284779
reference_title: "Heart Transplantation for Chagas Cardiomyopathy."
supports: SUPPORT
snippet: "Chagas cardiomyopathy (CC) is one of the chronic manifestations of Trypanosoma cruzi (T. cruzi) infection"
explanation: The abstract identifies cardiomyopathy as a chronic manifestation of Chagas disease.
- name: Heart failure
category: Cardiovascular
frequency: OCCASIONAL
phenotype_term:
preferred_term: Congestive heart failure
term:
id: HP:0001635
label: Congestive heart failure
evidence:
- reference: PMID:28284779
reference_title: "Heart Transplantation for Chagas Cardiomyopathy."
supports: SUPPORT
snippet: "Chagas etiology of heart failure has become the third most common indication for HT in South America."
explanation: The abstract links Chagas disease to heart failure requiring transplantation.
treatments:
- name: Benznidazole or nifurtimox therapy
description: Antitrypanosomal therapy for Chagas disease.
treatment_term:
preferred_term: pharmacotherapy
term:
id: MAXO:0000058
label: pharmacotherapy
evidence:
- reference: PMID:30111183
reference_title: "Clinical and pharmacological profile of benznidazole for treatment of Chagas disease."
supports: SUPPORT
snippet: "Currently, only benznidazole (BZN) and nifurtimox are recognized by the World Health Organization as effective drugs for treatment of CD."
explanation: The review lists benznidazole and nifurtimox as WHO-recognized therapies.
references:
- reference: DOI:10.1016/j.lana.2024.100768
title: 'Chagas disease in the United States: a call for increased investment and collaborative research'
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: 'Chagas disease in the United States: a call for increased investment and collaborative research'
supporting_text: 'Chagas disease in the United States: a call for increased investment and collaborative research'
- reference: DOI:10.1016/j.lana.2024.100821
title: 'Retrospect, advances and challenges in Chagas disease diagnosis: a comprehensive review'
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: 'Retrospect, advances and challenges in Chagas disease diagnosis: a comprehensive review'
supporting_text: 'Retrospect, advances and challenges in Chagas disease diagnosis: a comprehensive review'
- reference: DOI:10.1016/j.lana.2024.100881
title: The epidemiology of Chagas disease in the Americas
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: The epidemiology of Chagas disease in the Americas
supporting_text: The epidemiology of Chagas disease in the Americas
- reference: DOI:10.1016/j.lanepe.2024.101040
title: 'Prevalence of Chagas disease among Latin American immigrants in non-endemic countries: an updated systematic review and meta-analysis'
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: 'Prevalence of Chagas disease among Latin American immigrants in non-endemic countries: an updated systematic review and meta-analysis'
supporting_text: 'Prevalence of Chagas disease among Latin American immigrants in non-endemic countries: an updated systematic review and meta-analysis'
- reference: DOI:10.1038/s41598-024-58776-3
title: 'Effect of an exercise-based cardiac rehabilitation program on quality of life of patients with chronic Chagas cardiomyopathy: results from the PEACH randomized clinical trial'
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: To investigate the effect of an exercise-based cardiac rehabilitation program on the quality of life (QoL) of patients with chronic Chagas cardiomyopathy (CCC).
supporting_text: To investigate the effect of an exercise-based cardiac rehabilitation program on the quality of life (QoL) of patients with chronic Chagas cardiomyopathy (CCC).
evidence:
- reference: DOI:10.1038/s41598-024-58776-3
reference_title: 'Effect of an exercise-based cardiac rehabilitation program on quality of life of patients with chronic Chagas cardiomyopathy: results from the PEACH randomized clinical trial'
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: To investigate the effect of an exercise-based cardiac rehabilitation program on the quality of life (QoL) of patients with chronic Chagas cardiomyopathy (CCC).
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.1093/infdis/jiab513
title: Recommendations for Screening and Diagnosis of Chagas Disease in the United States
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: Chagas disease affects an estimated 326 000–347 000 people in the United States and is severely underdiagnosed.
supporting_text: Chagas disease affects an estimated 326 000–347 000 people in the United States and is severely underdiagnosed.
evidence:
- reference: DOI:10.1093/infdis/jiab513
reference_title: Recommendations for Screening and Diagnosis of Chagas Disease in the United States
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Chagas disease affects an estimated 326 000–347 000 people in the United States and is severely underdiagnosed.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.1177/15353702231220658
title: Inflammation and mitochondria in the pathogenesis of chronic Chagas disease cardiomyopathy
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: Chagas disease (CD), caused by the protozoan parasite Trypanosoma cruzi, is a neglected disease affecting around 6 million people.
supporting_text: Chagas disease (CD), caused by the protozoan parasite Trypanosoma cruzi, is a neglected disease affecting around 6 million people.
evidence:
- reference: DOI:10.1177/15353702231220658
reference_title: Inflammation and mitochondria in the pathogenesis of chronic Chagas disease cardiomyopathy
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Chagas disease (CD), caused by the protozoan parasite Trypanosoma cruzi, is a neglected disease affecting around 6 million people.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.1186/s13071-023-05861-7
title: 'The Pampa del Indio project: sustainable vector control and long-term declines in the prevalence and abundance of Triatoma infestans infected with Trypanosoma cruzi in the Argentine Chaco'
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: The Gran Chaco region is a major hotspot of Chagas disease.
supporting_text: The Gran Chaco region is a major hotspot of Chagas disease.
evidence:
- reference: DOI:10.1186/s13071-023-05861-7
reference_title: 'The Pampa del Indio project: sustainable vector control and long-term declines in the prevalence and abundance of Triatoma infestans infected with Trypanosoma cruzi in the Argentine Chaco'
supports: SUPPORT
evidence_source: OTHER
snippet: The Gran Chaco region is a major hotspot of Chagas disease.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.1186/s13071-024-06276-8
title: Insecticidal activity of fluralaner (Exzolt®) administered to Gallus gallus domesticus against triatomines (Hemiptera, Reduviidae, Triatominae)
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: Triatoma infestans, Triatoma brasiliensis, Triatoma pseudomaculata and Rhodnius prolixus are vectors of Trypanosoma cruzi, the etiological agent of Chagas disease.
supporting_text: Triatoma infestans, Triatoma brasiliensis, Triatoma pseudomaculata and Rhodnius prolixus are vectors of Trypanosoma cruzi, the etiological agent of Chagas disease.
evidence:
- reference: DOI:10.1186/s13071-024-06276-8
reference_title: Insecticidal activity of fluralaner (Exzolt®) administered to Gallus gallus domesticus against triatomines (Hemiptera, Reduviidae, Triatominae)
supports: SUPPORT
evidence_source: OTHER
snippet: Triatoma infestans, Triatoma brasiliensis, Triatoma pseudomaculata and Rhodnius prolixus are vectors of Trypanosoma cruzi, the etiological agent of Chagas disease.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.1186/s13071-024-06366-7
title: Slow recovery rates and spatial aggregation of Triatoma infestans populations in an area with high pyrethroid resistance in the Argentine Chaco
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: The emergence of pyrethroid resistance has threatened the elimination of Triatoma infestans from the Gran Chaco ecoregion.
supporting_text: The emergence of pyrethroid resistance has threatened the elimination of Triatoma infestans from the Gran Chaco ecoregion.
evidence:
- reference: DOI:10.1186/s13071-024-06366-7
reference_title: Slow recovery rates and spatial aggregation of Triatoma infestans populations in an area with high pyrethroid resistance in the Argentine Chaco
supports: SUPPORT
evidence_source: OTHER
snippet: The emergence of pyrethroid resistance has threatened the elimination of Triatoma infestans from the Gran Chaco ecoregion.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.1371/journal.pntd.0011410
title: 'Chagas prevention and control in an endemic area from the Argentinian Gran Chaco Region: Data from 14 years of uninterrupted intervention'
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: Chagas Disease (ChD) is a Neglected Tropical Disease (NTD) affecting 6 to 7 million people worldwide, mostly from Latin America.
supporting_text: Chagas Disease (ChD) is a Neglected Tropical Disease (NTD) affecting 6 to 7 million people worldwide, mostly from Latin America.
evidence:
- reference: DOI:10.1371/journal.pntd.0011410
reference_title: 'Chagas prevention and control in an endemic area from the Argentinian Gran Chaco Region: Data from 14 years of uninterrupted intervention'
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Chagas Disease (ChD) is a Neglected Tropical Disease (NTD) affecting 6 to 7 million people worldwide, mostly from Latin America.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.1371/journal.pntd.0012407
title: 'Prevention of congenital chagas disease by trypanocide treatment in women of reproductive age: A meta-analysis of observational studies'
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: Maternal-foetal transmission of Chagas disease (CD) affects newborns worldwide.
supporting_text: Maternal-foetal transmission of Chagas disease (CD) affects newborns worldwide.
evidence:
- reference: DOI:10.1371/journal.pntd.0012407
reference_title: 'Prevention of congenital chagas disease by trypanocide treatment in women of reproductive age: A meta-analysis of observational studies'
supports: SUPPORT
evidence_source: OTHER
snippet: Maternal-foetal transmission of Chagas disease (CD) affects newborns worldwide.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.17037/pubs.04673813
title: Development of Rapid Diagnostic Tests for Trypanosoma cruzi Lineage-Specific Serology, Comparative Epidemiology and for Monitoring Efficacy of Chemotherapy
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: Development of Rapid Diagnostic Tests for Trypanosoma cruzi Lineage-Specific Serology, Comparative Epidemiology and for Monitoring Efficacy of Chemotherapy
supporting_text: Trypanosoma cruzi, the protozoan agent of Chagas disease, is split into six distinct genetic lineages TcI – TcVI, each associated with ecoepidemiological features and transmission cycles, and it has long been proposed that the differing lineages may contribute to the varying clinical forms of Chagas disease.
evidence:
- reference: DOI:10.17037/pubs.04673813
reference_title: Development of Rapid Diagnostic Tests for Trypanosoma cruzi Lineage-Specific Serology, Comparative Epidemiology and for Monitoring Efficacy of Chemotherapy
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Trypanosoma cruzi, the protozoan agent of Chagas disease, is split into six distinct genetic lineages TcI – TcVI, each associated with ecoepidemiological features and transmission cycles, and it has long been proposed that the differing lineages may contribute to the varying clinical forms of Chagas disease.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.3389/fmicb.2024.1393992
title: 'In vitro diagnostic methods of Chagas disease in the clinical laboratory: a scoping review'
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: Chagas disease (CD), caused by Trypanosoma cruzi, is a global health concern with expanding geographical reach.
supporting_text: Chagas disease (CD), caused by Trypanosoma cruzi, is a global health concern with expanding geographical reach.
evidence:
- reference: DOI:10.3389/fmicb.2024.1393992
reference_title: 'In vitro diagnostic methods of Chagas disease in the clinical laboratory: a scoping review'
supports: SUPPORT
evidence_source: OTHER
snippet: Chagas disease (CD), caused by Trypanosoma cruzi, is a global health concern with expanding geographical reach.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.3389/fpara.2023.1138375
title: 'Laboratory diagnosis of Trypanosoma cruzi infection: a narrative review'
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: Trypanosoma cruzi infection, currently endemic in 21 countries, is a public health problem not only in the Americas but also in countries with Latin American migrants.
supporting_text: Trypanosoma cruzi infection, currently endemic in 21 countries, is a public health problem not only in the Americas but also in countries with Latin American migrants.
evidence:
- reference: DOI:10.3389/fpara.2023.1138375
reference_title: 'Laboratory diagnosis of Trypanosoma cruzi infection: a narrative review'
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Trypanosoma cruzi infection, currently endemic in 21 countries, is a public health problem not only in the Americas but also in countries with Latin American migrants.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.3389/fpara.2023.1241154
title: 'Clinical use of molecular methods for Trypanosoma cruzi infection in endemic and non-endemic countries: Benefits, limitations and challenges'
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: Trypanosoma cruziinfection is diagnosed by parasitological, molecular, and serological tests.
supporting_text: Trypanosoma cruziinfection is diagnosed by parasitological, molecular, and serological tests.
evidence:
- reference: DOI:10.3389/fpara.2023.1241154
reference_title: 'Clinical use of molecular methods for Trypanosoma cruzi infection in endemic and non-endemic countries: Benefits, limitations and challenges'
supports: SUPPORT
evidence_source: OTHER
snippet: Trypanosoma cruziinfection is diagnosed by parasitological, molecular, and serological tests.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.3390/ijms25073840
title: 'Chagas Disease: A Silent Threat for Dogs and Humans'
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: Chagas disease (CD) is a vector-borne Neglected Zoonotic Disease (NZD) caused by a flagellate protozoan, Trypanosoma cruzi, that affects various mammalian species across America, including humans and domestic animals.
supporting_text: Chagas disease (CD) is a vector-borne Neglected Zoonotic Disease (NZD) caused by a flagellate protozoan, Trypanosoma cruzi, that affects various mammalian species across America, including humans and domestic animals.
evidence:
- reference: DOI:10.3390/ijms25073840
reference_title: 'Chagas Disease: A Silent Threat for Dogs and Humans'
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Chagas disease (CD) is a vector-borne Neglected Zoonotic Disease (NZD) caused by a flagellate protozoan, Trypanosoma cruzi, that affects various mammalian species across America, including humans and domestic animals.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.3390/jcm13092565
title: 'Chagas Disease: Comparison of Therapy with Nifurtimox and Benznidazole in Indigenous Communities in Colombia'
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: For indigenous people in Colombia, high infection rates with Chagas disease (CD) are known.
supporting_text: For indigenous people in Colombia, high infection rates with Chagas disease (CD) are known.
evidence:
- reference: DOI:10.3390/jcm13092565
reference_title: 'Chagas Disease: Comparison of Therapy with Nifurtimox and Benznidazole in Indigenous Communities in Colombia'
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: For indigenous people in Colombia, high infection rates with Chagas disease (CD) are known.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.3390/pathogens13100870
title: The Functions of Cytokines in the Cardiac Immunopathogenesis of Chagas Disease
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: Clinically, it presents in two distinct phases, acute and chronic.
supporting_text: Clinically, it presents in two distinct phases, acute and chronic.
evidence:
- reference: DOI:10.3390/pathogens13100870
reference_title: The Functions of Cytokines in the Cardiac Immunopathogenesis of Chagas Disease
supports: SUPPORT
evidence_source: OTHER
snippet: Clinically, it presents in two distinct phases, acute and chronic.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.3390/vaccines12080870
title: Treatments and the Perspectives of Developing a Vaccine for Chagas Disease
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: Chagas disease (CD) treatment and vaccine development are critical due to the significant health burden caused by the disease, especially in Latin America.
supporting_text: Chagas disease (CD) treatment and vaccine development are critical due to the significant health burden caused by the disease, especially in Latin America.
evidence:
- reference: DOI:10.3390/vaccines12080870
reference_title: Treatments and the Perspectives of Developing a Vaccine for Chagas Disease
supports: SUPPORT
evidence_source: OTHER
snippet: Chagas disease (CD) treatment and vaccine development are critical due to the significant health burden caused by the disease, especially in Latin America.
explanation: Deep research cited this publication as relevant literature for Chagas Disease.
- reference: DOI:10.7326/aitc202302210
title: Chagas Disease
found_in:
- Chagas_Disease-deep-research-falcon.md
findings:
- statement: Chagas Disease
supporting_text: Chagas Disease