Estudo da fauna de triatomíneos e da ocorrência de doença de Chagas em Monte Negro, Rondônia, Brasil

Massaro, Débora Cristina; Rezende, Denise Silva; Camargo, Luís Marcelo Aranha

doi:10.1590/s1415-790x2008000200005

Cited by 39 publications

(50 citation statements)

References 16 publications

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“…Such a correlation was also noticed by Massaro et al 9 in studies previously carried out in the same region (Monte Negro). The short time that the area has been populated by humans may be the reason why the vector has not yet settled around it.…”

Section: Discussionsupporting

confidence: 83%

“…In their study, also carried out in Monte Negro, Massaro et al 9 found the existence of the species R. robustus, R. pictipes, R. prolixus, R. milese, and Panstrongylus geniculatus; the latter being found during soaring and intradomiciliarily (dormitory). It is possible that the existing difference between the results found in this study from the study carried out by Massaro et al 9 is the non-random characteristic of their samples and because the samples were obtained in a limited area (10 sites) and in the surrounds of urban areas 9 .…”

Section: Discussionmentioning

confidence: 84%

“…The relation between the presence of animals on babassus and the presence of triatomines is significant (Fisher´s Exact Test, p=0,0000000000) and, is pursuant to Gurgel-Gonçalves et al 19 and Massaro et al 9 .…”

Section: Discussionmentioning

confidence: 98%

“…Studies carried out in many different regions of Brazil have shown high triatomine infestation on palms, chiefly by bugs of the genus Rhodnius spp. 9,19,20 .…”

Section: Discussionmentioning

confidence: 99%

“…The weather is equatorial and super humid, with an annual rain precipitation of 2.020mm (1,800-2,200mm), an average temperature of 25.8°C ranging from 12°C to 37°C, and air humidity ranging between 70% to 80% over most part of the year 9,12 . There are considerable anthropogenic activities along the BR421 road, which crosses the municipality and its vicinal districts.…”

Section: Methodsmentioning

confidence: 99%

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Study on Chagas disease occurrence in the municipality of Monte Negro, State of Rondônia, Brazilian Amazon

Carvalho

Rosa

Carvalho

et al. 2011

Rev. Soc. Bras. Med. Trop.

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Introduction: Studies on Chagas disease deal with the perspective of its occurrence in the Amazon region, which is directly correlated to the population growth and the spread of the bug biotope. The state of Rondônia has an immense source of vectors (Triatomine) and reservoirs of Trypanosoma cruzi. Environmental changes brought forth by the deforestation in the region may cause vector behavior changes and bring these vectors to a closer contact with humans, increasing the probability of vector infection. Methods: This study was carried out to check the occurrence of Chagas disease in the municipality of Monte Negro, Rondônia, Brazil, based on a random sampling of the farms and people wherein blood collection from the population and capturing triatomines were done. The blood samples were submitted to serologic tests to detect antibodies of the IgG class against T. cruzi. The triatomines that were collected had their digestive tract checked for the presence of trypanosomatidae with morphology resembling that of the T. cruzi. Results: The population examined was mostly from other states. From the 322 bugs examined on the microscope, 50% showed parasites with morphology compatible with T. cruzi. From the serology of 344 random samples of human blood, 1.2% was found positive, 6% showed inconclusive results, and 92.8% were negative. Conclusions: Monte Negro shows low prevalence of human infection by T. cruzi and none active vector transmission; however, preventive and surveying measures, which are not performed until now, shall be taken due to the abundance of vectors infected by trypanosomatidae. Keywords: Chagas disease. Amazon. Trypanosoma cruzi. Triatomines. RESUMO Introdução:Estudos anteriores sobre doença de Chagas tratam da perspectiva da ocorrência endêmica da parasitose na região Amazônica, que se correlaciona diretamente com o aumento populacional e a invasão do ecótopo pelos triatomíneos. O Estado de Rondônia possui um imenso manancial de vetores e reservatórios de Trypanosoma cruzi. As modificações ambientais ocasionadas pelo desmatamento na região podem gerar mudanças nos hábitos dos vetores, trazendo-os para um contato mais próximo do homem, aumentando as possibilidades de infecção vetorial. Métodos: Este estudo foi realizado para verificar a ocorrência da doença de Chagas em Monte Negro, Rondônia, equivalente à amostragem aleatória das propriedades rurais e de pessoas residentes no município, onde foram realizadas coletas sanguíneas dos moradores e coleta de triatomíneos. As amostras sanguíneas foram submetidas a testes sorológicos para detecção de anticorpos da classe IgG contra T. cruzi e os triatomíneos coletados foram analisados para verificar a presença de tripanosomatídeos em seu trato digestivo. Resultados: A população estudada, randomicamente selecionada, é em sua maioria advinda de outros estados. Dos 322 barbeiros avaliados microscopicamente, 50% apresentavam flagelados com morfologia compatível com Trypanosoma cruzi. A sorologia das 344 amostras de sangue humano coletadas randomicame...

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 98%

“…Studies carried out in many different regions of Brazil have shown high triatomine infestation on palms, chiefly by bugs of the genus Rhodnius spp. 9,19,20 .…”

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Study on Chagas disease occurrence in the municipality of Monte Negro, State of Rondônia, Brazilian Amazon

Carvalho

Rosa

Carvalho

et al. 2011

Rev. Soc. Bras. Med. Trop.

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Viability of the Babassu Palm Eco-socio-system in Brazil: The Challenges of Coviability

Mitja¹,

Sirakov²,

Santos³

et al. 2019

Coviability of Social and Ecological Systems: Reconnecting Mankind to the Biosphere in an Era of Global Change

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Prevalence of Chagas disease in Brazil: A systematic review and meta-analysis

et al. 2014

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Chagas disease is a major public health problem in Brazil and Latin America. During the last years, it has become an emerging problem in North America and Europe due to increasing international migration. Here we describe the prevalence of Chagas disease in Brazil through a systematic review. We searched national and international electronic databases, grey literature and reference lists of selected articles for population-based studies on Chagas disease prevalence in Brazil, performed from 1980 until September 2012. Forty-two articles with relevant prevalence data were identified from a total of 4985 references. Prevalence ranged from 0% to 25.1%. Most surveys were performed in the Northeast region, especially in the state of Piauí. We observed a high degree of heterogeneity in most pooled estimates (I(2)>75%; p<0.001). The pooled estimate of Chagas disease prevalence across studies for the entire period was 4.2% (95% CI: 3.1-5.7), ranging from 4.4% (95% CI: 2.3-8.3) in the 1980s to 2.4% (95% CI: 1.5-3.8) after 2000. Females (4.2%; 95% CI: 2.6-6.8), >60 year-olds (17.7%; 95% CI: 11.4-26.5), Northeast (5.0%; 95% CI: 3.1-8.1) and Southeast (5.0%; CI: 2.4-9.9) regions and mixed (urban/rural) areas (6.4%; 95% CI: 4.2-9.4) had the highest pooled prevalence. About 4.6 million (95% CI: 2.9-7.2 million) of people are estimated to be infected with Trypanosoma cruzi. The small number of studies and small-scale samples of the general population in some areas limit interpretation, and findings of this review do not necessarily reflect the situation of the entire country. Systematic population-based studies at regional and national level are recommended to provide more accurate estimates and better define the epidemiology and risk areas of Chagas disease in Brazil.

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Estudo da fauna de triatomíneos e da ocorrência de doença de Chagas em Monte Negro, Rondônia, Brasil

Cited by 39 publications

References 16 publications

Study on Chagas disease occurrence in the municipality of Monte Negro, State of Rondônia, Brazilian Amazon

Study on Chagas disease occurrence in the municipality of Monte Negro, State of Rondônia, Brazilian Amazon

Viability of the Babassu Palm Eco-socio-system in Brazil: The Challenges of Coviability

Prevalence of Chagas disease in Brazil: A systematic review and meta-analysis

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