Characteristics of Triatomine infestation and natural Trypanosoma cruzi infection in the State of Rio Grande do Norte, Brazil

Barbosa-Silva, Andressa Noronha; Câmara, Antônia Claudia Jácome da; Martins, Kiev; Nunes, Daniela Ferreira; Oliveira, Pedro Igor Câmara de; Azevedo, Paulo Roberto Medeiros de; Chiari, Égler; Galvão, Lúcia Maria da Cunha

doi:10.1590/0037-8682-0300-2015

Cited by 28 publications

(49 citation statements)

References 62 publications

(85 reference statements)

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“…This suggests that transmission does not occur in these municipalities. However, this discontinuity of entomological surveillance, together with the presence of native species such as T. brasiliensis, T. pseudomaculata, and P. lutzi, which have a high index of natural infection by T. cruzi in DUs as reported by Barbosa-Silva et al 10 and Vargas et al 27 , suggest risk of transmission of the parasite to the rural population in Rio Grande do Norte; this risk is evidenced in a recent outbreak of oral transmission in the municipality of Marcelino Vieira 27 .…”

Section: Discussionmentioning

confidence: 94%

“…In this scenario, T. brasiliensis and T. pseudomaculata were the most frequently captured in DUs. Triatoma brasiliensis is the most frequently captured species in the intradomicile 9,10,22,28 . Studies in the states of Rio Grande do Norte 10 , Ceará [29][30][31] and Pernambuco 32,33 have demonstrated the predominance of these species in the peridomicile, thus corroborating our data.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, it is difficult to examine the developmental stage of triatomines using this method as the insects are not alive 41 , and staining quality may affect the specificity of the assay, thus hindering the morphological distinction between T. cruzi and other trypanosomatides, such as Trypanosoma rangeli 42 . Recent data have shown that a combination of methods (e.g., direct examination, xenoculture, and polymerase chain reaction) is best for detection of T. cruzi 10,43 .…”

Section: Discussionmentioning

confidence: 99%

“…It is possible that this species is undergoing a domiciliation process in the state. The proximity of P. lutzi to artificial ecotopes is of concern as it is a wild species, with high reported rates of natural infection by T. cruzi in the intradomicile 10 .…”

Section: Discussionmentioning

confidence: 99%

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Synanthropic triatomines (Hemiptera: Reduviidae): infestation, colonization, and natural infection by trypanosomatids in the State of Rio Grande do Norte, Brazil

Barbosa-Silva

Souza

Diotaiuti

et al. 2019

Rev. Soc. Bras. Med. Trop.

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Introduction: The ecoepidemiological situation in the State of Rio Grande do Norte, Brazil is characterized by frequent invasion and colonization of domiciliary units (DUs) by several triatomine species, with high rates of natural infection by Trypanosoma cruzi. Methods: We evaluated the possibility of vector transmission of T. cruzi based on records of the occurrence of domiciled triatomines collected by the Secretariat of State for Public Health from 2005 to 2015. During this period, 67.7% (113/167) of municipalities conducted at least one active search and 110 recorded the presence of insects in DUs.These activities were more frequent in municipalities considered to have a high and medium-level risk of T. cruzi transmission. Results: Of 51,569 captured triatomines, the most common species were Triatoma brasiliensis (47.2%) and T. pseudomaculata (40.2%). Colonies of T. brasiliensis, T. pseudomaculata, T. petrocchiae, Panstrongylus lutzi, and Rhodnius nasutus were also recorded in the intradomicile and peridomicile. Natural infection by trypanosomatids was detected in 1,153 specimens; the highest rate was found in R. nasutus (3.5%), followed by T. brasiliensis (2.5%) and T. pseudomaculata (2.4%). There have been high levels of colonization over the years; however, not all infested DUs have been sprayed. Conclusions: This is the first report of intradomicile and peridomicile colonization by P. lutzi. These results demonstrate the risk of new cases of infection by T. cruzi and reinforce the need for continuous entomological surveillance in the State of Rio Grande do Norte.

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Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Synanthropic triatomines (Hemiptera: Reduviidae): infestation, colonization, and natural infection by trypanosomatids in the State of Rio Grande do Norte, Brazil

Barbosa-Silva

Souza

Diotaiuti

et al. 2019

Rev. Soc. Bras. Med. Trop.

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“…Chagas disease (CD), also known as American Trypanosomiasis, is an infectious parasitic disease caused by the etiologic agent Trypanosoma cruzi 1 . This disease is widely disseminated in Latin America, being surpassed in numbers of cases by malaria alone 2,3 .…”

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confidence: 99%

Retrospective study of the epidemiological overview of the transmission of Chagas disease in the State of Acre, South-Western Amazonia, from 2009 to 2016

Oliveira¹,

Ribeiro²,

Castro³

et al. 2018

J. Hum. Growth Dev.

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Introduction: Chagas disease (CD), also known as American Trypanosomiasis, is an infectious parasitic disease caused by the etiologic agent Trypanosoma cruzi. It is considered endemic in the low-income population and is classified by the WHO as a neglected tropical disease. In the state of Acre, there is almost no scientific data regarding the epidemiology of CD, even though the first autochthonous case was registered in the 1980s. Objective: To analyze the epidemiological panorama of the transmission of Chagas disease in the State of Acre, Brazil, from 2009 to 2016. Methods: A survey of the occurrence of Chagas disease in the State of Acre was performed using public domain secondary data from the Brazil’s Notifiable Diseases Information System of SUS (publicly funded health care system), and from the SUS Database of the Health Surveillance Foundation of the State of Acre. Data were collected from the following variables: gender, age group, form of contagion, distribution by region and municipality, perimeter and seasonality. Result: Forty-two cases of CD were confirmed, with an increase of more than 300% from 2015 to 2016 and a frequency coefficient of 3.06 cases per 100,000 people, and in the Tarauacá/Envira region, the probability of a person contracting CD was 600% higher than the state mean. Conclusion: We found that in the state of Acre, in the period from 2009 to 2016, most cases of CD occurred in 2016, in the Tarauacá/Envira region, mainly in the municipality of Feijó, in the rural zone, from July to October, in the age group of 0 to 30 years, being the oral form the main route of transmission and presenting no statistical difference between men and women.

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Dogs and Their Role in the Eco-epidemiology of Chagas Disease

Gürtler

Cardinal

2020

Parasitology Research Monographs

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Characteristics of Triatomine infestation and natural Trypanosoma cruzi infection in the State of Rio Grande do Norte, Brazil

Cited by 28 publications

References 62 publications

Synanthropic triatomines (Hemiptera: Reduviidae): infestation, colonization, and natural infection by trypanosomatids in the State of Rio Grande do Norte, Brazil

Synanthropic triatomines (Hemiptera: Reduviidae): infestation, colonization, and natural infection by trypanosomatids in the State of Rio Grande do Norte, Brazil

Retrospective study of the epidemiological overview of the transmission of Chagas disease in the State of Acre, South-Western Amazonia, from 2009 to 2016

Dogs and Their Role in the Eco-epidemiology of Chagas Disease

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