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A cross-sectional study on the clinical and immunological spectrum of human Leishmania (L.) infantum chagasi infection in the Brazilian Amazon region

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2009
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A cross-sectional study on the clinical and immunological spectrum of human Leishmania (L.) infantum chagasi infection in the Brazilian Amazon region.pdf (200.1xmlui.dri2xhtml.METS-1.0.size-kilobytes)
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http://patua.iec.gov.br/handle/iec/675
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Crescente, José Angelo Barletta
Silveira, Fernando Tobias
Lainson, Ralph
Gomes, Claudia Maria de Castro
Laurenti, Márcia D
Corbett, Carlos Eduardo Pereira
xmlui.dri2xhtml.METS-1.0.item-abstract
The objectives of this study were to identify individuals with symptomatic and/or asymptomatic infection due to Leishmania (L.) infantum chagasi; to study the two types of infection, both clinically and immunologically, and to determine the prevalence rate of infection at the beginning of the study. This was a cross-sectional study with a cohort of 946 individuals, of both genders, from the age of 1 year, living in the municipality of Barcarena, PA, Brazil, an area endemic for American visceral leishmaniasis (AVL). The leishmanin skin test (LST) and the indirect fluorescent test (IFAT), were used for the diagnosis of infection. One hundred and twenty cases of infection were diagnosed, with a prevalence rate of 12.6%; eight cases showed high seroreactivity (1280 10 240, IgG) in IFAT and no LST reaction; four of these cases were typical AVL and four had subclinical oligosymptomatic infection. Using two immunological methods with a clinical examination of the infected individuals enabled the identification of five clinical immunological profiles which may prom ote a better understanding of the interaction between L. (L.) i. chagasi and the human immune response: asymptomatic infection (AI) 73.4 %; subclinical resistant infection (SRI) 15 %; subclinical oligosymptomatic infection (SOI) 3%; symptomatic infection (AVL) 3% and indeterminate initial infection (III) 5%.
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CRESCENTE, José Angelo Barletta et al. A cross-sectional study on the clinical and immunological spectrum of human Leishmania (L.) infantum chagasi infection in the Brazilian Amazon region. Transactions of the Royal Society of TheTropical Medicine and Hygiene, v. 103, n. 12, p. 1250-1256, 2009.
xmlui.dri2xhtml.METS-1.0.item-decsPrimary
Leishmania infantum
Leishmaniose Visceral / epidemiologia
Transmissão de Doença
Prevalência
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  • SAPAR - Artigos Científicos

Instituto Evandro Chagas - SVS - MS - 2007-2018 Rodovia BR316 km 7 sn - Levilandia - 67030-000 - Ananindeua - Para - Brasil.
Licença Creative CommonsEste trabalho está licenciado com uma Licença Creative Commons - Atribuição-NãoComercial 4.0 Internacional
Tel: (55 91) 3214-2191
Email: biblioteca@iec.gov.br / clariceneta@iec.gov.br
 

 

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Instituto Evandro Chagas - SVS - MS - 2007-2018 Rodovia BR316 km 7 sn - Levilandia - 67030-000 - Ananindeua - Para - Brasil.
Licença Creative CommonsEste trabalho está licenciado com uma Licença Creative Commons - Atribuição-NãoComercial 4.0 Internacional
Tel: (55 91) 3214-2191
Email: biblioteca@iec.gov.br / clariceneta@iec.gov.br