Seroprevalence of American trypanosomiasis in adults in an area of the western Brazilian Amazon region

From January to March 2001 a seroepidemiological survey for American trypanosomiasis (Chagas disease) was carried out among urban and rural human populations in areas of the Upper Purus basin, in the western Brazilian Amazon region, using serial testing with three different serological techniques. T...

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Bibliographic Details
Published in:Revista da Sociedade Brasileira de Medicina Tropical 2007-07, Vol.40 (4), p.436
Main Authors: Dantas-Maia, Thor Oliveira, Castro, Cleudson, Ostermayer, Alejandro Luquetti, Macêdo, Vanize
Format: Article
Language:eng ; por
Subjects:
Adolescent
Adult
Aged
Aged, 80 and over
Animals
Antigens, Protozoan
Brazil - epidemiology
Chagas Disease - diagnosis
Chagas Disease - epidemiology
Child
Female
Human populations
Humans
Male
Middle Aged
Prevalence
Rural areas
Rural Population
Seroepidemiologic Studies
Trypanosoma cruzi - immunology
Urban Population
Vector-borne diseases
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Summary:From January to March 2001 a seroepidemiological survey for American trypanosomiasis (Chagas disease) was carried out among urban and rural human populations in areas of the Upper Purus basin, in the western Brazilian Amazon region, using serial testing with three different serological techniques. The sample was composed of 1,055 individuals: 844 from urban and 211 from rural areas. Autochthonous infection was identified in nine individuals aged 16 to 72 years: five from urban and four from rural areas. The estimated prevalences of Chagas infection for the urban and rural areas were 0.6% (95% CI: 0.2-1.4) and 1.9% (95% CI: 0.6-4.5) respectively. An apparent clustering trend was noted: seven were born along the Purus river: three lived at the same locality and two of them in the same dwelling.
ISSN:0037-8682
1678-9849
DOI:10.1590/S0037-86822007000400013