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BACKGROUND Chagas disease, caused by Trypanosoma cruzi, affects nearly six million people worldwide. Various serological tests have been developed for its diagnosis. OBJECTIVE Examine the performance of a set of commercial immunological assays in relation to the geographical origin of the patient sample comparing four states of Brazil: Amazonas (AM), Mato Grosso do Sul (MS), Minas Gerais (MG) and Piauí (PI). METHODS Seven immunoassays were employed to detect anti-T. cruzi IgG antibodies in 379 patient samples that had been previously diagnosed using the two-step protocol required by the Brazilian Ministry of Health. FINDINGS A significant variation in the percent reactive was calculated for the samples from AM and MS, while the PI and MG showed a significant variation in the percent non-reactive. The average reactivity index was significantly higher for samples from the states of PI and MG states than AM and MS. MAIN CONCLUSIONS All tests presented a satisfactory performance overall. Yet, variations were observed that were associated to the region of origin of the samples. Our analyses suggest that future evaluations of immunoassays should include a sampling of sera from regions where the test will be applied in addition to the available International Biological Reference Standards.

https://doi.org/10.1590/0074-02760210032 138 downloads

Chagas disease in Virgem da Lapa, Minas Gerais, Brazil: left ventricle aneurysm and the risk of death in the 24-year interval
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Borges-Pereira, José

; Coura, José Rodrigues

; Zauza, Patrícia Lago

; Pirmez, Claude

; Xavier, Sérgio Salles

Memórias do Instituto Oswaldo Cruz

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2020, Volume 115 elocation e200056

Abstract: En | Text: En | PDF: En

BACKGROUND Left ventricular aneurysm (LVA) is indicator of high morbidity in Chagas’ disease. A cross-sectional study performed identified LVA in 18.8% of the chronic chagasic patients (CCP). OBJECTIVE Determine the risk of death of patients with chronic chagasic cardiopathy (CCC) and LVA in 24-year interval. MATERIAL AND METHODS In 1995 a cohort of 298 CCP was evaluated by anamnesis, physical examination, EKG and ECHO and classified in groups: G0 = 86 without cardiopathy; G1 = 156 with cardiopathy without LVA and G2 = 56 with cardiopathy and LVA. 38 patients of G0 and G1 used benznidazole. Information about the deaths was obtained in the notary, death certificates, hospital records and family members. FINDINGS Were registered 113 deaths (37.9%): 107 (35.9%) attributed to cardiopathy and 6 (2.0%) to other causes (p < 0.05). Amongst these 107 deaths, 10 (11.6%) occurred in G0; 49 (31.4%) occurred in G1 and 48 (85.7%) occurred in G2 (p < 0.05). The risk of death was 2.7 and 7.4 times significantly higher in G2, than in G1 and G0, respectively. CONCLUSION Chronic chagasic patients with LVA and ejection fraction < 45% have a higher risk of death than those without.

https://doi.org/10.1590/0074-02760200056 731 downloads

Application of WHO International Biological Reference Standards to evaluate commercial serological tests for chronic Chagas disease
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Sáez-Alquezar, Amadeo

; Junqueira, Angela Cristina Verissimo

; Durans, Andressa da Matta

; Guimarães, André Valpassos

; Corrêa, José Abol

; Provance Jr, D William

; Cabello, Pedro Hernan

; Coura, José Rodrigues

; Viñas, Pedro Albajar

Memórias do Instituto Oswaldo Cruz

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2020, Volume 115 elocation e200214

Abstract: En | Text: En | PDF: En

BACKGROUND Chagas disease, resulting from Trypanosoma cruzi infections, continues to be a health concern mainly in Latin American countries where the parasite is endemic. The laboratory diagnosis of a chronic infection is determined through serological assays for antibodies against T. cruzi and several tests are available that differ in key components, formats and methodologies. To date, no single test meets the criteria of a gold standard. The situation is further complicated by the difficulties associated with performance comparisons between different immunoassays or methodologies executed at different times and geographical areas. OBJECTIVE To improve the diagnosis of Chagas disease, the WHO coordinated the development of two International Biological Reference Standards for antibodies against anti-T. cruzi: NIBSC 09/186 and NIBSC 09/188 that respectively represent geographical regions with the highest prevalence of TcII and TcI lineages of the parasite. METHODS The principle goal of this study was to verify the behavior of these standards when assayed by several commercially available serological tests that employ different methods to capture and detect human anti-T. cruzi antibodies. FINDINGS AND MAIN CONCLUSIONS The results reinforce the recommendation that these standards be considered for performance evaluations of commercialised immunoassays and should be an integral step in the development of new test components or assay paradigms.

https://doi.org/10.1590/0074-02760200214 828 downloads

Human acute Chagas disease: changes in factor VII, activated protein C and hepatic enzymes from patients of oral outbreaks in Pará State (Brazilian Amazon)
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Santos, Valéria Regina Cavalcante dos

; Antunes, Dina

; Souza, Dilma do Socorro Moraes de

; Moreira, Otacilio Cruz

; Lima, Igor Campos de Almeida

; Farias-de-Oliveira, Désio A

; Lobo, João Pedro

; de Meis, Ernesto

; Coura, José Rodrigues

; Savino, Wilson

; Junqueira, Angela Cristina Verissimo

; de Meis, Juliana

Memórias do Instituto Oswaldo Cruz

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2020, Volume 115 elocation e190364

Abstract: En | Text: En | PDF: En

Oral transmission of Chagas disease has been increasing in Latin American countries. The present study aimed to investigate changes in hepatic function, coagulation factor levels and parasite load in human acute Chagas disease (ACD) secondary to oral Trypanosoma cruzi transmission. Clinical and epidemiological findings of 102 infected individuals attended in the State of Pará from October 2013 to February 2016 were included. The most common symptoms were fever (98%), asthenia (83.3%), face and limb edema (80.4%), headache (74.5%) and myalgia (72.5%). The hepatic enzymes alanine aminotransferase (ALT) and aspartate aminotransferase (AST) of 30 ACD patients were higher compared with controls, and this increase was independent of the treatment with benznidazole. Moreover, ACD individuals had higher plasma levels of activated protein C and lower levels of factor VII of the coagulation cascade. Patients with the highest parasite load had also the most increased transaminase levels. Also, ALT and AST were associated moderately (r = 0.429) and strongly (r = 0.595) with parasite load respectively. In conclusion, the present study raises the possibility that a disturbance in coagulation and hepatic function may be linked to human ACD.

https://doi.org/10.1590/0074-02760190364 914 downloads

Asymptomatic Plasmodium infection in a residual malaria transmission area in the Atlantic Forest region: Implications for elimination
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Miguel, Renata Bortolasse

; Albuquerque, Hermano Gomes

; Sanchez, Maria Carmen Arroyo

; Coura, José Rodrigues

; Santos, Simone da Silva

; Silva, Sidnei da

; Moreira, Carlos José de Carvalho

; Suárez-Mutis, Martha Cecilia

Revista da Sociedade Brasileira de Medicina Tropical

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2019, Volume 52 elocation e20180537

Abstract: En | Text: En | PDF: En

Abstract INTRODUCTION: Elimination of malaria in areas of interrupted transmission warrants careful case assessment to avoid the reintroduction of this disease. Occasional malaria cases are reported among visitors of the Atlantic Forest area of Brazil, while data on residents of this area are scarce. METHODS: A sectional study was carried out to examine 324 individuals living in a municipality where autochthonous cases were detected. RESULTS: Asymptomatic Plasmodium infections were detected in 2.8% of the individuals by polymerase chain reaction (PCR), with one case of P. falciparum (0.3%), two cases of P. vivax (0.6%), and six cases of P. malariae (1.9%). The thick blood smears were negative in all individuals. Serological tests performed in 314 subjects were reactive in 11.1%, with 3.5% for P. falciparum and 7.7% for P. vivax. A subsample of 42 reactive individuals for any Plasmodium species showed P. malariae in 30.9% of specimens. Individuals who entered the Atlantic Forest region were 2.7 times more likely to exhibit reactive serology for P. vivax compared with individuals who did not enter this region (p<0.05). Children <15 years had a higher chance of reactive serology for P. falciparum and P. vivax than individuals ≥15 years of age (p<0.05). Individuals living in the Paraiso district had a higher chance of reactive serology for P. vivax compared to other districts (p<0.05). No associations were found between sex, past exposure to malaria, or serological response to antibodies of any Plasmodium species. CONCLUSIONS: The implications of these results for the elimination of malaria were discussed.

https://doi.org/10.1590/0037-8682-0537-2018 3156 downloads

Surveillance of seroepidemiology and morbidity of Chagas disease in the Negro River, Brazilian Amazon
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Coura, José Rodrigues

; Junqueira, Angela CV

; Ferreira, João Marcos BB

Memórias do Instituto Oswaldo Cruz

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jan 2018, Volume 113 N. 1 Pages 17 - 23

Abstract: En | Text: En | PDF: En

BACKGROUND Chagas disease in the Brazilian Amazon Region was previously regarded as an enzootic disease of wild animals. More recently, in situations where humans have penetrated the wild ecotope or where triatomines and/or wild animals (marsupials) have invaded human homes resulting in disease transmission, Chagas disease has come to be regarded as an anthropozoonosis. We found that the highest incidence of infection due to Trypanosoma cruzi and Chagas disease occurred among piassaba fibre gatherers and their families. OBJECTIVES Considering the results of previous surveys, we conducted a new survey of piassaba gatherers and their families in the creeks of the Aracá, Curuduri, Demini, Ererê and Padauiri rivers, which are tributaries on the left bank of the Negro River, in the municipality of Barcelos; Barcelos-Caurés highway; Negro River in Santa Isabel of the Negro River; and Marié River, on the right bank of the Negro River. METHODS A questionnaire was applied to 482 piassaba gatherers and their families who accompanied them. We collected 5-mL blood samples (with permission from each subject), separated the serum, and performed serological tests using indirect immunofluorescence and conventional and recombinant enzyme-linked immunosorbent assays (ELISA). We performed brief clinical examination and electrocardiograms. Only 273 subjects attended our field base for detailed clinical examination and electrocardiogram. FINDINGS AND MAIN CONCLUSIONS The questionnaire revealed that 100% of the 482 patients recognised the triatomine Rhodnius brethesi, which they had seen in the piassaba plantation and 81% in their field huts. A total of 79% of subjects had previously been bitten by this vector and 21% did not know. The 25 subjects seropositive for T. cruzi infection (5.2%) stated that they had been bitten more than 10 times by this insect. Of the 273 subjects who underwent electrocardiogram, 22% showed conditions that were possibly attributable to Chagas disease or other cardiovascular disease.

https://doi.org/10.1590/0074-02760170169 1361 downloads

Acute Chagas disease in the state of Pará, Amazon Region: is it increasing?
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Santos, Valéria Regina Cavalcante dos

; Meis, Juliana de

; Savino, Wilson

; Andrade, Jorge Alberto Azevedo

; Vieira, José Ricardo dos Santos

; Coura, José Rodrigues

; Junqueira, Angela Cristina Verissimo

Memórias do Instituto Oswaldo Cruz

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2018, Volume 113 N. 5 elocation e170298

Abstract: En | Text: En | PDF: En

Acute Chagas disease (ACD) has a distinct epidemiological profile in the Amazon Region, with cases and outbreaks of Trypanosoma cruzi infection being possibly related to the ingestion of contaminated food. Data on ACD in the state of Pará retrieved from 2000 to 2016 from the Brazilian Notifiable Diseases Information System (SINAN) were evaluated. During this period, 2,030 of the 16,807 reported cases were confirmed, with a higher incidence between the months of August and December, thus characterising a seasonal pattern of acute infection, and coinciding with the higher production of “açaí”, one fruit likely involved in the oral transmission of the disease. Evaluation of the absolute numbers of confirmed ACD cases secondary to oral infection suggests that infection through this route increased during the 2010-2016 period, differing from what was recorded in terms of vectorial or other infection routes. These findings point to the need of intensifying strategies to prevent or substantially reduce oral transmission.

https://doi.org/10.1590/0074-02760170298 2980 downloads

2 nd Brazilian Consensus on Chagas Disease, 2015
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Dias, João Carlos Pinto

; Ramos Jr., Alberto Novaes

; Gontijo, Eliane Dias

; Luquetti, Alejandro

; Shikanai-Yasuda, Maria Aparecida

; Coura, José Rodrigues

; Torres, Rosália Morais

; Melo, José Renan da Cunha

; Almeida, Eros Antonio de

; Oliveira Jr., Wilson de

; Silveira, Antônio Carlos

; Rezende, Joffre Marcondes de

; Pinto, Fabiane Scalabrini

; Ferreira, Antonio Walter

; Rassi, Anis

; Fragata Filho, Abílio Augusto

; Sousa, Andréa Silvestre de

; Correia, Dalmo

; Jansen, Ana Maria

; Andrade, Glaucia Manzan Queiroz

; Britto, Constança Felícia De Paoli de Carvalho

; Pinto, Ana Yecê das Neves

; Rassi Jr., Anis

; Campos, Dayse Elisabeth

; Abad-Franch, Fernando

; Santos, Silvana Eloi

; Chiari, Egler

; Hasslocher-Moreno, Alejandro Marcel

; Moreira, Eliane Furtado

; Marques, Divina Seila de Oliveira

; Silva, Eliane Lages

; Marin-Neto, José Antonio

; Galvão, Lúcia Maria da Cunha

; Xavier, Sergio Salles

; Valente, Sebastião Aldo da Silva

; Carvalho, Noêmia Barbosa

; Cardoso, Alessandra Viana

; Silva, Rafaella Albuquerque e

; Costa, Veruska Maia da

; Vivaldini, Simone Monzani

; Oliveira, Suelene Mamede

; Valente, Vera da Costa

; Lima, Mayara Maia

; Alves, Renato Vieira

Revista da Sociedade Brasileira de Medicina Tropical

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dec 2016, Volume 49 Suppl. 1 Pages 3 - 60

Abstract: En | Text: En | PDF: En

Abstract Chagas disease is a neglected chronic condition with a high burden of morbidity and mortality. It has considerable psychological, social, and economic impacts. The disease represents a significant public health issue in Brazil, with different regional patterns. This document presents the evidence that resulted in the Brazilian Consensus on Chagas Disease. The objective was to review and standardize strategies for diagnosis, treatment, prevention, and control of Chagas disease in the country, based on the available scientific evidence. The consensus is based on the articulation and strategic contribution of renowned Brazilian experts with knowledge and experience on various aspects of the disease. It is the result of a close collaboration between the Brazilian Society of Tropical Medicine and the Ministry of Health. It is hoped that this document will strengthen the development of integrated actions against Chagas disease in the country, focusing on epidemiology, management, comprehensive care (including families and communities), communication, information, education, and research .

https://doi.org/10.1590/0037-8682-0505-2016 9267 downloads

Frederico Simões Barbosa: uma vida, uma obra, uma escola
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Coura, José Rodrigues

Cadernos de Saúde Pública

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aug 2016, Volume 32 Suppl. 1 elocation eES08S116

Abstract: Pt | Text: Pt | PDF: Pt

https://doi.org/10.1590/0102-311xer08s116 254 downloads

10.

II Consenso Brasileiro em Doença de Chagas, 2015
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Dias, João Carlos Pinto

; Ramos Jr., Alberto Novaes

; Gontijo, Eliane Dias

; Luquetti, Alejandro

; Shikanai-Yasuda, Maria Aparecida

; Coura, José Rodrigues

; Torres, Rosália Morais

; Melo, José Renan da Cunha

; Almeida, Eros Antonio de

; Oliveira Jr., Wilson de

; Silveira, Antônio Carlos

; Rezende, Joffre Marcondes de

; Pinto, Fabiane Scalabrini

; Ferreira, Antonio Walter

; Rassi, Anis

; Fragata Filho, Abílio Augusto

; Sousa, Andréa Silvestre de

; Correia Filho, Dalmo

; Jansen, Ana Maria

; Andrade, Glaucia Manzan Queiroz

; Britto, Constança Felícia De Paoli de Carvalho

; Pinto, Ana Yecê das Neves

; Rassi Jr., Anis

; Campos, Dayse Elisabeth

; Abad-Franch, Fernando

; Santos, Silvana Eloi

; Chiari, Egler

; Hasslocher-Moreno, Alejandro Marcel

; Moreira, Eliane Furtado

; Marques, Divina Seila de Oliveira

; Silva, Eliane Lages

; Marin-Neto, José Antonio

; Galvão, Lúcia Maria da Cunha

; Xavier, Sergio Salles

; Valente, Sebastião Aldo da Silva

; Carvalho, Noêmia Barbosa

; Cardoso, Alessandra Viana

; Silva, Rafaella Albuquerque e

; Costa, Veruska Maia da

; Vivaldini, Simone Monzani

; Oliveira, Suelene Mamede

; Valente, Vera da Costa

; Lima, Mayara Maia

; Alves, Renato Vieira

Epidemiologia e Serviços de Saúde

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jun 2016, Volume 25 N. spe Pages 7 - 86

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO A doença de Chagas é uma condição crônica negligenciada com elevada carga de morbimortalidade e impacto dos pontos de vista psicológico, social e econômico. Representa um importante problema de saúde pública no Brasil, com diferentes cenários regionais. Este documento traduz a sistematização das evidências que compõe o Consenso Brasileiro de Doença de Chagas. O objetivo foi sistematizar estratégias de diagnóstico, tratamento, prevenção e controle da doença de Chagas no país, de modo a refletir as evidências científicas disponíveis. Sua construção fundamentou-se na articulação e contribuição estratégica de especialistas brasileiros com conhecimento, experiência e atualização sobre diferentes aspectos da doença. Representa o resultado da estreita colaboração entre a Sociedade Brasileira de Medicina Tropical e o Ministério da Saúde. Espera-se com este documento fortalecer o desenvolvimento de ações integradas para enfrentamento da doença no país com foco em epidemiologia, gestão, atenção integral (incluindo famílias e comunidades), comunicação, informação, educação e pesquisas.

ABSTRACT Chagas disease is a neglected chronic condition that presents high morbidity and mortality burden, with considerable psychological, social, and economic impact. The disease represents a significant public health issue in Brazil, with different regional patterns. This document presents the evidence that resulted in the Brazilian Consensus on Chagas Disease. The objective was to review and standardize strategies for diagnosis, treatment, prevention, and control of Chagas disease in the country, based on the available scientific evidence. The consensus is based on collaboration and contribution of renowned Brazilian experts with vast knowledge and experience on various aspects of the disease. It is the result of close collaboration between the Brazilian Society of Tropical Medicine and the Ministry of Health. This document shall strengthen the development of integrated control measures against Chagas disease in the country, focusing on epidemiology, management, comprehensive care (including families and communities), communication, information, education, and research.

https://doi.org/10.5123/s1679-49742016000500002 63592 downloads

11.

II Consenso Brasileiro em Doença de Chagas, 2015
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Dias, João Carlos Pinto

; Ramos Jr., Alberto Novaes

; Gontijo, Eliane Dias

; Luquetti, Alejandro

; Shikanai-Yasuda, Maria Aparecida

; Coura, José Rodrigues

; Torres, Rosália Morais

; Melo, José Renan da Cunha

; Almeida, Eros Antonio de

; Oliveira Jr., Wilson de

; Silveira, Antônio Carlos

; Rezende, Joffre Marcondes de

; Pinto, Fabiane Scalabrini

; Ferreira, Antonio Walter

; Rassi, Anis

; Fragata Filho, Abílio Augusto

; Sousa, Andréa Silvestre de

; Correia Filho, Dalmo

; Jansen, Ana Maria

; Andrade, Glaucia Manzan Queiroz

; Britto, Constança Felícia De Paoli de Carvalho

; Pinto, Ana Yecê das Neves

; Rassi Jr., Anis

; Campos, Dayse Elisabeth

; Abad-Franch, Fernando

; Santos, Silvana Eloi

; Chiari, Egler

; Hasslocher-Moreno, Alejandro Marcel

; Moreira, Eliane Furtado

; Marques, Divina Seila de Oliveira

; Silva, Eliane Lages

; Marin-Neto, José Antonio

; Galvão, Lúcia Maria da Cunha

; Xavier, Sergio Salles

; Valente, Sebastião Aldo da Silva

; Carvalho, Noêmia Barbosa

; Cardoso, Alessandra Viana

; Silva, Rafaella Albuquerque e

; Costa, Veruska Maia da

; Vivaldini, Simone Monzani

; Oliveira, Suelene Mamede

; Valente, Vera da Costa

; Lima, Mayara Maia

; Alves, Renato Vieira

Epidemiologia e Serviços de Saúde

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jun 2016, Volume 25 N. spe. Pages 7 - 86

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

https://doi.org/10.5123/S1679-49742016000500002 3725 downloads

12.

Frederico Simões Barbosa: uma vida, uma obra, uma escola
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Coura, José Rodrigues

Cadernos de Saúde Pública

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2016, Volume 32 Suppl. 1 elocation eES08S116

Abstract: Pt | Text: Pt | PDF: Pt

https://doi.org/10.1590/0102-311xer08s116 1019 downloads

13.

PREVALENCE OF AMERICAN TRYPANOSOMIASIS AND LEISHMANIASES IN DOMESTIC DOGS IN A RURAL AREA OF THE MUNICIPALITY OF SÃO JOÃO DO PIAUÍ, PIAUÍ STATE, BRAZIL
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PEREZ, Taliha Dias

; FIGUEIREDO, Fabiano Borges

; JUNIOR, Artur Augusto Mendes VELHO

; SILVA, Valmir Laurentino

; MADEIRA, Maria de Fátima

; BRAZIL, Reginaldo Peçanha

; COURA, José Rodrigues

Revista do Instituto de Medicina Tropical de São Paulo

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2016, Volume 58 elocation 79

Abstract: En | Text: En | PDF: En

SUMMARY Chagas disease and the leishmaniases are endemic zoonoses of great importance to public health in the state of Piauí, Brazil. The domestic dog (Canis familiaris) is a major reservoir, host of Trypanosoma cruzi and Leishmania spp. in both urban and rural areas, playing an important role in the transmission of these parasites. The present study evaluated the prevalence of both infectious diseases in dogs of a rural area in the municipality of São João do Piauí, Piauí State. One hundred twenty-nine blood samples were collected for serological assessment: for the leishmaniases, 49 (38%) animals tested positive by the Dual-Path Platform technology (DPP), nine (6%) by the Enzyme-linked Immunosorbent Assay (ELISA), and 19 (14.7%) by the Indirect Fluorescent Antibody test (IFA); while for American Trypanosomiasis, 36 (28%) dogs were reagent by ELISA and 21 by IFA. Of the 129 dogs sampled, 76 were submitted to xenodiagnosis, bone marrow aspiration and skin biopsy to perform parasitological tests whose results showed only one (2.3%) positive skin sample for Trypanosoma caninum and one positive xenodiagnosis for T. cruzi, both results confirmed by molecular assays. Three hundred triatomines of the species Triatoma brasiliensis and 552 phlebotomines - 509 (97%) of the species Lutzomyia longipalpis, were also captured.

https://doi.org/10.1590/S1678-9946201658079 1364 downloads

14.

Surveillance, health promotion and control of Chagas disease in the Amazon Region - Medical attention in the Brazilian Amazon Region: a proposal
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Coura, José Rodrigues

; Junqueira, Angela CV

Memórias do Instituto Oswaldo Cruz

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nov 2015, Volume 110 N. 7 Pages 825 - 830

Abstract: En | Text: En | PDF: En

We refer to Oswaldo Cruz’s reports dating from 1913 about the necessities of a healthcare system for the Brazilian Amazon Region and about the journey of Carlos Chagas to 27 locations in this region and the measures that would need to be adopted. We discuss the risks of endemicity of Chagas disease in the Amazon Region. We recommend that epidemiological surveillance of Chagas disease in the Brazilian Amazon Region and Pan-Amazon region should be implemented through continuous monitoring of the human population that lives in the area, their housing, the environment and the presence of triatomines. The monitoring should be performed with periodic seroepidemiological surveys, semi-annual visits to homes by health agents and the training of malaria microscopists and healthcare technicians to identify Trypanosoma cruzi from patients’ samples and T. cruzi infection rates among the triatomines caught. We recommend health promotion and control of Chagas disease through public health policies, especially through sanitary education regarding the risk factors for Chagas disease. Finally, we propose a healthcare system through base hospitals, intermediate-level units in the areas of the Brazilian Amazon Region and air transportation, considering the distances to be covered for medical care.

https://doi.org/10.1590/0074-02760150153 2129 downloads

15.

The main sceneries of Chagas disease transmission. The vectors, blood and oral transmissions - A comprehensive review
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Coura, José Rodrigues

Memórias do Instituto Oswaldo Cruz

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may 2015, Volume 110 N. 3 Pages 277 - 282

Abstract: En | Text: En | PDF: En

This review deals with transmission ofTrypanosoma cruziby the most important domestic vectors, blood transfusion and oral intake. Among the vectors,Triatoma infestans,Panstrongylus megistus, Rhodnius prolixus,Triatoma dimidiata, Triatoma brasiliensis,Triatoma pseudomaculata, Triatoma sordida,Triatoma maculata, Panstrongylus geniculatus,Rhodnius ecuadoriensis and Rhodnius pallescens can be highlighted. Transmission of Chagas infection, which has been brought under control in some countries in South and Central America, remains a great challenge, particularly considering that many endemic countries do not have control over blood donors. Even more concerning is the case of non-endemic countries that receive thousands of migrants from endemic areas that carry Chagas disease, such as the United States of America, in North America, Spain, in Europe, Japan, in Asia, and Australia, in Oceania. In the Brazilian Amazon Region, since Shaw et al. (1969) described the first acute cases of the disease caused by oral transmission, hundreds of acute cases of the disease due to oral transmission have been described in that region, which is today considered to be endemic for oral transmission. Several other outbreaks of acute Chagas disease by oral transmission have been described in different states of Brazil and in other South American countries.

https://doi.org/10.1590/0074-0276140362 4811 downloads

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