Aspectos epidemiológicos, sociais e sanitários de uma área no Rio Negro, estado do Amazonas, com especial referência às parasitoses intestinais e à infecção chagásica

Coura, José Rodrigues; Willcox, Henry P. F.; Tavares, Antonio de Matos; Paiva, Daurita Darci de; Fernandes, Octávio; Rada, E L; Perez, Eusébio P.; Borges, Lisbeth C. L.; Hidalgo, M. E. C.; Nogueira, Myriam Lucia C.

doi:10.1590/s0102-311x1994000800010

Cited by 13 publications

(7 citation statements)

References 17 publications

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“…A high prevalence of enteroparasites was also reported in 1994 by Coura et al [ 12 ] for riverside settlements in Amazonas state, with 75.5% positive cases among 441 tests performed at a 95% confidence level. More recently, investigating a riverside community in Coari county, Amazonas state, Santos et al [ 5 ] detected 83% positive cases among children.…”

Section: Discussionsupporting

confidence: 59%

Enteroparasites in Riverside Settlements in the Pantanal Wetlands Ecosystem

Silva

Maciel

Castro

et al. 2018

Journal of Parasitology Research

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Background Intestinal parasites are a major source of health problems in developing countries, where socioeconomic, cultural, and environmental conditions contribute in maintaining the biological cycles of various parasites and facilitating their spread. The objective of this study, conducted in Corumbá, Mato Grosso do Sul state, Brazil, was to investigate the occurrence of intestinal parasites in riverside communities in the South Pantanal wetlands and conduct educational interventions focused on health and environmental preservation. Method In total, 196 stool samples were tested for parasites using the merthiolate-iodine-formaldehyde concentration (MIFC) technique and spontaneous sedimentation and educational activities were carried out. Results Enteroparasite prevalence was 72% (65.6–78.2%; 95% CI). Of the 141 positive cases, monoparasitism was found in 34.7%, biparasitism in 23%, and polyparasitism in 14.3%. Entamoeba coli was the most frequent protozoan (70.2%). Among helminths, hookworms were the most prevalent. Enteroparasitosis prevalence did not differ for sex or place of abode but proved higher in individuals older than 10 years. Conclusion The high positivity rate for enteroparasites found for the communities stems from lack of sanitation and poor personal and environmental hygiene habits, indicating that effective health policies and educational interventions are needed to reduce the current risk levels.

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Section: Discussionsupporting

confidence: 59%

Enteroparasites in Riverside Settlements in the Pantanal Wetlands Ecosystem

Silva

Maciel

Castro

et al. 2018

Journal of Parasitology Research

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“…ELISA has been used to corroborate serodiagnosis in blood banks and in clinical-epidemiological studies but technique improvement has been a constant concern (ZAUZA, 2000). To complicate, the accuracy of diagnostic techniques nonetheless varies for different endemic regions possibly due to genetic profiles peculiarities of T. cruzi populations circulating in each area (COURA et al, 1994c). Inconclusive serology, i.e., reactivity is in the threshold for two or more techniques may be attributed to purification (STOLF, 1992).…”

Section: Discussionmentioning

confidence: 99%

On the possibility of autochthonous Chagas disease in Roraima, Amazon region, Brazil, 2000-2001

Luitgards-Moura

Borges-Pereira

Costa

et al. 2005

Rev. Inst. Med. trop. S. Paulo

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SUMMARYChagas disease has been almost entirely eradicated from the arid zones in Central and Northeastern Brazil where rare or no autochthonous cases have been reported. However, in the last 10 years the disease has increasingly been registered in the Amazon Region. Aiming to investigate the possibility of the occurrence of autochthonous cycle of Chagas disease in Roraima, triatomine collections, vectorial susceptibility studies (this one to be shown elsewhere), parasitological and serological analyses were conducted in three agricultural settlement areas (Rorainópolis, Passarão Project and Ilha Community). Blood-donor candidates were also investigated. This is the first epidemiological survey on Chagas disease conducted in agricultural settlements in Roraima. Triatomine species found were Triatoma maculata, Rhodnius pictipes, Rhodnius robustus and Panstrongylus geniculatus. Trypanosoma cruzi detection analyses included xenodiagnosis, indirect immunofluorescence, indirect hemaglutination, ELISA and kinetoplast PCR amplification. Natural triatomine infection was not found in intestinal contents. Twenty-five adult settlers (1.4% out of 1821, all > 15 year-old, 20 migrants) presented anti-T. cruzi antibodies. Two migrant settlers (from Minas Gerais and Maranhão) tested positive for more than two serological tests, besides either being positive for xenodiagnosis or PCR. Results show that Chagas disease is not endemic in the areas studied. However, all elements of the transmission cycle are present, demanding for an adequate and continuous vigilance.

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“…Of special importance are low income communities who live in degraded and high risk environments lacking adequate housing, water supply and sanitation, resulting in close contact with immature forms of these worms in the environment (Gazzinelli et al, 2012). Several surveys have shown high rates of infection of human communities all over the Amazon, both rural and urban, with species causing STHs, as well as protozoan intestinal parasites (Coura et al, 1994;Eve et al, 1998;San Sebástian and Santi, 2000;Egido et al, 2001;Araújo and Fernandez, 2005;Rios et al, 2007;Souza et al, 2007;Carvalho-Costa et al, 2007;Hinke, 2009;Santos et al, 2010;IDB/PAHO, 2012). Besides the poverty and sanitation aspects mentioned above, in the Amazon, environmental conditions such as soil type and humidity as well as climatic conditions (e.g.…”

Section: Soil-transmitted Helminthiases and Filarial Infectionsmentioning

confidence: 99%

Environmental change and the dynamics of parasitic diseases in the Amazon

Confalonieri

Margonari

Quintão³

2014

Acta Tropica

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The Amazonian environment is changing rapidly, due to deforestation, in the short term, and, climatic change is projected to alter its forest cover, in the next few decades. These modifications to the, environment have been altering the dynamics of infectious diseases which have natural foci in the, Amazonian biome, especially in its forest. Current land use practices which are changing the, epidemiological profile of the parasitic diseases in the region are road building; logging; mining; expansion of agriculture and cattle ranching and the building of large dams. Malaria and the cutaneous, leishmaniasis are the diseases best known for their rapid changes in response to environmental, modifications. Others such as soil-transmitted helminthiases, filarial infections and toxoplasmosis, which have part of their developmental cycles in the biophysical environment, are also expected to, change rapidly. An interdisciplinary approach and an integrated, international surveillance are needed, to manage the environmentally-driven changes in the Amazonian parasitic diseases in the near future.

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Aspectos epidemiológicos, sociais e sanitários de uma área no Rio Negro, estado do Amazonas, com especial referência às parasitoses intestinais e à infecção chagásica

Cited by 13 publications

References 17 publications

Enteroparasites in Riverside Settlements in the Pantanal Wetlands Ecosystem

Enteroparasites in Riverside Settlements in the Pantanal Wetlands Ecosystem

On the possibility of autochthonous Chagas disease in Roraima, Amazon region, Brazil, 2000-2001

Environmental change and the dynamics of parasitic diseases in the Amazon

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