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Lacerda MVG, Monteiro W, Hendy A, Guerra MVDF, Guerra MDGVB. The Obituary of the Brazilian Amazon Entomologist: Nelson Ferreira Fé (★1941 †2023). Rev Soc Bras Med Trop 2023; 56:e02602023. [PMID: 37493753 PMCID: PMC10367211 DOI: 10.1590/0037-8682-0260-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 06/06/2023] [Indexed: 07/27/2023] Open
Affiliation(s)
- Marcus Vinícius Guimarães Lacerda
- Fundação de Medicina Tropical Doutor Heitor Vieira Dourado, Manaus, AM, Brasil
- Instituto Leônidas & Maria Deane, Fiocruz, Manaus, AM, Brasil
- University of Texas Medical Branch, Galveston, TX, USA
| | - Wuelton Monteiro
- Fundação de Medicina Tropical Doutor Heitor Vieira Dourado, Manaus, AM, Brasil
- Universidade do Estado do Amazonas, Manaus, AM, Brasil
| | - Adam Hendy
- University of Texas Medical Branch, Galveston, TX, USA
| | - Marcus Vinitius de Farias Guerra
- Fundação de Medicina Tropical Doutor Heitor Vieira Dourado, Manaus, AM, Brasil
- Universidade do Estado do Amazonas, Manaus, AM, Brasil
| | - Maria das Graças Vale Barbosa Guerra
- Fundação de Medicina Tropical Doutor Heitor Vieira Dourado, Manaus, AM, Brasil
- Universidade do Estado do Amazonas, Manaus, AM, Brasil
- Fundação Hospitalar Alfredo da Matta, Manaus, AM, Brasil
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Santos JPD, Guimarães LM, Lima IP, Batista FMDA, Carvalho-Costa FA, Santos-Mallet JRD. Spatial distribution of synanthropic triatomines in Piaui State, Northeastern Brazil. Rev Inst Med Trop Sao Paulo 2020; 62:e57. [PMID: 32844905 PMCID: PMC7447235 DOI: 10.1590/s1678-9946202062057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 07/21/2020] [Indexed: 12/02/2022] Open
Abstract
This study aimed to describe the spatial distribution and assess entomological indicators of synanthropic triatomines in Piaui State, Northeastern Brazil. We used surveillance data on the detection, identification and assessment of natural infection with trypanosomatids from triatomines in the State from 2014 to 2017. The State was divided into four macroregions. In relation to the dispersion rates of triatomines, they were much lower in the North, when compared to Southwest, Southeast and Central North macroregions. Infestation rates were higher in the Southwest and Southeast and intradomicile infestation rates varied during the study period, reaching high values in all regions. Insects belonging to the species Triatoma brasiliensis complex, Triatoma pseudomaculata, Triatoma sordida, and to the genus Panstrongylus spp. and Rhodnius spp. were collected during this period. T. brasiliensis was collected from all four regions of the State, but more frequently in those located in the Southeast. A similar pattern was observed for T. pseudomaculata. T. sordida was detected in the municipalities in the Southeast and Southwest regions, and less frequently in the Central North municipalities. Rhodnius spp. was detected in the Central North and North regions, and Panstrongylus spp. in the Central North and Southeast regions. The highest trypanosomatid-positivity rate of T. brasiliensis and Panstrongylus spp. was in the Southeast region. A significant proportion of the municipalities of Piaui State presents entomological parameters that indicate a risk of Chagas disease by vector transmission.
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Affiliation(s)
| | - Lucas Melo Guimarães
- Departamento de Epidemiologia em Saúde Pública, Escola Nacional de Saúde Pública, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Filipe Anibal Carvalho-Costa
- Escritório Técnico Regional, Fundação Oswaldo Cruz, Teresina, Piauí, Brazil.,Laboratório de Epidemiologia e Sistemática Molecular, Fundação Oswaldo Cruz, Instituto Oswaldo Cruz,nRio de Janeiro, Rio de Janeiro, Brazil
| | - Jacenir Reis Dos Santos-Mallet
- Escritório Técnico Regional, Fundação Oswaldo Cruz, Teresina, Piauí, Brazil.,Laboratório Interdisciplinar de Vigilância Entomológica em Diptera e Hemiptera, Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil.,Universidade Iguaçu, Nova Iguaçu, Rio de Janeiro, Brazil
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Investigation of Chagas disease in four periurban areas in northeastern Brazil: epidemiologic survey in man, vectors, non-human hosts and reservoirs. Trans R Soc Trop Med Hyg 2012; 106:143-9. [DOI: 10.1016/j.trstmh.2011.10.013] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 10/18/2011] [Accepted: 10/18/2011] [Indexed: 11/21/2022] Open
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Magalhães BML, Coelho LIARC, Maciel MG, Ferreira JMBB, Umezawa ES, Coura JR, Guerra JADO, Barbosa MDGV. Serological survey for Chagas disease in the rural areas of Manaus, Coari, and Tefé in the Western Brazilian Amazon. Rev Soc Bras Med Trop 2011; 44:697-702. [DOI: 10.1590/s0037-86822011000600009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Accepted: 06/17/2011] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION: Deforestation, uncontrolled forest, human population migration from endemic areas, and the large number of reservoirs and wild vectors naturally infected by Trypanosoma cruzi promote the endemicity of Chagas disease in the Amazon region. METHODS: We conducted an initial serological survey (ELISA) in a sample of 1,263 persons; 1,095 (86.7%) were natives of the State of Amazonas, 666 (52.7%) were male, and 948 (75.1%) were over 20 years old. Serum samples that were found to be reactive, indeterminate, or inconclusive by indirect immunofluorescence (IFI) or positive with low titer by IFA were tested by Western blot (WB). Serologically confirmed patients (WB) were evaluated in terms of epidemiological, clinical, ECG, and echocardiography characteristics. RESULTS: Fifteen patients had serologically confirmed T. cruzi infection, and 12 of them were autochthonous to the state of Amazonas, for an overall seroprevalence of 1.2% and 0.9% for the state of Amazonas. Five of the 15 cases were males, and the average age was 47 years old; most were farmers with low education. One patient who was not autochthonous, having originated from Alagoas, showed right bundle branch block, bundle branch block, and anterosuperior left ventricular systolic dysfunction with an ejection fraction of 54%. CONCLUSIONS: The results of this study ratify the importance of monitoring CD cases in Amazonia, particularly in the state of Amazonas.
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Oliveira TG, Carvalho-Costa FA, Gomes TF, Sarquis O, Sposina R, Lima MM. Developmental and reproductive patterns of Triatoma brasiliensis infected with Trypanosoma cruzi under laboratory conditions. Mem Inst Oswaldo Cruz 2011; 105:1057-60. [PMID: 21225206 DOI: 10.1590/s0074-02762010000800018] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2010] [Accepted: 09/01/2010] [Indexed: 11/22/2022] Open
Abstract
The aim of this work was to study the interaction between Trypanosoma cruzi-1 and Triatoma brasiliensis. A group of 1st instar nymphs was initially fed on T. cruzi-infected mice and a control group was fed on uninfected mice. From the second feeding onwards, both groups were otherwise fed on non-infected mice. The resulting adults were grouped in pairs: infected male/uninfected female, uninfected male/infected female, infected male and female and uninfected male/uninfected female. The infection affected only the 1st instar nymphs, which took significantly more time to reach the 2nd instar than uninfected nymphs. The differences in the molting time between the infected and uninfected nymphs from the 2nd to the 5th instars were not statistically significant. Both groups presented similar rates of nymphal mortality and reproductive performance was not significantly affected by infection in any of the treatments.
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Carvalho-Costa FA, Dos Santos SM, Pires MQ, Lopes CM, Noireau F, Pacheco RS. Sylvatic and peridomestic populations of Triatoma pseudomaculata are not significantly structured by habitat, as revealed by two genetic markers. JOURNAL OF VECTOR ECOLOGY : JOURNAL OF THE SOCIETY FOR VECTOR ECOLOGY 2010; 35:295-300. [PMID: 21175934 DOI: 10.1111/j.1948-7134.2010.00085.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Chagas disease remains a public health concern in Brazil and other Latin American countries, mainly due to the potential domiciliation of native triatomine species. We analyzed the genetic variability of Triatoma pseudomaculata in sylvatic and peridomestic ecotopes throughout three localities in the northeastern state of Bahia, Brazil. We studied polymorphisms generated by random amplified polymorphic DNA (RAPD) and isoenzyme electrophoresis analyses. Based on RAPD analysis, each specimen was assigned to one of three genetic clusters. Although all sylvatic specimens from one locality were grouped into the same cluster, sylvatic and peridomestic specimens from the other two localities were broadly distributed between the remaining two clusters, suggesting that geographic population structuring was not occurring. Furthermore, isoenzyme analysis suggested that distinct populations were in Hardy-Weinberg equilibrium. Low statistical values for Wright's Fst index also supported the absence of population structuring and suggested the occurrence of panmixia. We conclude that genetic flow occurs between sylvatic and peridomestic T. pseudomaculata populations, probably as a consequence of passive and active dispersion of the insects, associated with deforestation and anthropic transformations.
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Sarquis O, Carvalho-Costa FA, Oliveira LS, Duarte R, D Andrea PS, de Oliveira TG, Lima MM. Ecology of Triatoma brasiliensis in northeastern Brazil: seasonal distribution, feeding resources, and Trypanosoma cruzi infection in a sylvatic population. JOURNAL OF VECTOR ECOLOGY : JOURNAL OF THE SOCIETY FOR VECTOR ECOLOGY 2010; 35:385-394. [PMID: 21175946 DOI: 10.1111/j.1948-7134.2010.00097.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We assessed some ecological parameters of Triatoma brasiliensis in rock piles in the state of Ceará during the rainy and dry seasons. The greatest density was in April (median = 12.5 triatomines/site). The greatest abundance was in December, when the insects were more dispersed and the density per site was lower (6 triatomines/site). The nutritional status of females and 5th instar nymphs was increased in July. The rate of T. cruzi infection reached its highest peak in July (10.9%). ELISA revealed that the principal food sources were birds (33.1%), followed by armadillos (18.8%). Food sources were more frequently identified during the rainy season. T. brasiliensis specimens collected in the drought tended to: i) present lower rates of T. cruzi infection and gut content reactivity to tested antisera, ii) have a poorer nutritional status, iii) exhibit lower fecundity, iv) be more dispersed among the studied collection sites, and v) be more abundant and easily collected in the surface of the rocks, possibly reflecting an increased searching for blood meals. Such findings underscore epidemiological concerns and allow inferences about the season when triatomines can more frequently invade the peridomestic environment in search of food and recolonize artificial structures.
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Affiliation(s)
- Otilia Sarquis
- Laboratório de Eco-Epidemiologia da Doença de Chagas, Instituto Oswaldo Cruz (IOC/Fiocruz), Rio de Janeiro, RJ, Brazil
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Monteiro WM, Barbosa MDGV, Toledo MJDO, Fé FA, Fé NF. [Series of acute Chagas' disease cases attended at a tertiary-level clinic in Manaus, State of Amazonas, from 1980 to 2006]. Rev Soc Bras Med Trop 2010; 43:207-10. [PMID: 20464156 DOI: 10.1590/s0037-86822010000200021] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2009] [Accepted: 02/23/2010] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Chagas disease is an emerging and neglected problem in the Brazilian Amazon region. METHODS This study describes a series of acute autochthonous cases of Chagas disease that were attended at the Tropical Medicine Foundation of Amazonas, Manaus, between 1980 and 2006. RESULTS Twenty-nine cases were recorded: 19 (65.5%) were male and 10 (34.5%) cases were female. Fifteen (51.7%) were isolated cases and 14 (48.3%) were from outbreaks. The commonest signs and symptoms were fever, fatigue, headache, myalgia, chills, pallor, dyspnea and edema of the face and lower limbs. No deaths were recorded. CONCLUSIONS The disease occurred frequently among young people. The parasitological methods showed high sensitivity.
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Affiliation(s)
- Wuelton Marcelo Monteiro
- Programa de Pós-Graduação em Medicina Tropical, Fundação de Medicina Tropical do Amazonas, Universidade do Estado do Amazonas, 69040-000 Manaus, AM.
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Fé NF, Magalhães LK, Fé FA, Arakian SK, Monteiro WM, Barbosa MDGV. [Occurrences of triatomines in wild and domestic environments in the municipality of Manaus, State of Amazonas]. Rev Soc Bras Med Trop 2010; 42:642-6. [PMID: 20209347 DOI: 10.1590/s0037-86822009000600006] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2009] [Accepted: 11/09/2009] [Indexed: 05/26/2023] Open
Abstract
Analysis of the distribution of triatomines is essential for formulating control strategies for Chagas disease in the Amazon region. In this paper, the results from trapping in wild and artificial environments in rural and urban localities in Manaus, Amazonas, are presented. Out of the 115 triatomines collected, 85 (73.9%) were of the species Rhodnius pictipes, 25 (21.7%) of Rhodnius robustus and five (4.4%) of Panstrongylus geniculatus. The rate of natural infection by flagellates was 5.9% for Rhodnius pictipes and 8% for Rhodnius robustus. None of the specimens of Panstrongylus geniculatus were infected. All of the infected specimens were from forest fragments in the urban zone. It was found that 106 insects (92.2%) were collected from the forest environment and nine (7.8%) in households, by means of the active search. The genus Rhodnius clearly predominated in the wild environment. The specimens of Panstrongylus geniculatus (all adults) were collected inside homes. There were no signs of domestic colonization by triatomines.
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Affiliation(s)
- Nelson Ferreira Fé
- Gerência de Entomologia, Fundação de Medicina Tropical do Amazonas, Manaus, AM
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Costa J, Lorenzo M. Biology, diversity and strategies for the monitoring and control of triatomines - Chagas disease vectors. Mem Inst Oswaldo Cruz 2009; 104 Suppl 1:46-51. [DOI: 10.1590/s0074-02762009000900008] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2009] [Accepted: 06/10/2009] [Indexed: 11/22/2022] Open
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