title: [Seroprevalence of Chagas disease infection in the State of Piauí, 2002].
abstract: To evaluate the epidemiological situation of Chagas disease infection in the State of Piauí, Brazil, and its relationships with age, gender, blood transfusion and spontaneous abortion, a serological survey was performed. A random sample of 36,399 inhabitants of rural zones was examined between August and December 2002. Chagas disease infection was defined by the indirect immunofluorescence test, with identification of anti-Trypanosoma cruzi antibodies in blood samples collected on filter paper. The total seroprevalence was 1.9%, ranging from 0.1% in children less than five years old to 6.6% in adults over 79 years old. The seroprevalence was significantly higher in women (2.1%), illiterates (4.1%), individuals receiving blood (3.3%) and women with a history of spontaneous abortion (5.4%). Comparison with the national serological survey (1975-1980) showed that there had been a significant reduction in the seroprevalence of Chagas disease infection in the State of Piauí (4.0% to 1.9%), which was indicative of the efficacy of the vector control measures implemented between 1975 and 2002.
authors.affiliation: Departamento de Medicina Tropical, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil. borges@ioc.fiocruz.br
authors.forename: José
authors.initials: J
authors.lastname: Borges-Pereira
authors.forename: José Adail Fonseca
authors.initials: JA
authors.lastname: de Castro
authors.forename: Arlete Gonçalves
authors.initials: AG
authors.lastname: da Silva
authors.forename: Patrícia Lago
authors.initials: PL
authors.lastname: Zauza
authors.forename: Tiago Pires
authors.initials: TP
authors.lastname: Bulhões
authors.forename: Maria Elizabete
authors.initials: ME
authors.lastname: Gonçalves
authors.forename: Ernani Saraiva
authors.initials: ES
authors.lastname: de Almeida
authors.forename: Maria
authors.initials: M
authors.lastname: do Amparo Salmito
authors.forename: Lucia Regina Montebello
authors.initials: LR
authors.lastname: Pereira
authors.forename: Francisco Itamar
authors.initials: FI
authors.lastname: Alves Filho
authors.forename: Fernando G
authors.initials: FG
authors.lastname: Correia-Lima
authors.forename: José Rodrigues
authors.initials: JR
authors.lastname: Coura
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D000913:Antibodies, Protozoan / Q000097:blood*; D001938:Brazil / Q000453:epidemiology; D014355:Chagas Disease / Q000175:diagnosis / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D004522:Educational Status; D005260:Female; D019084:Fluorescent Antibody Technique, Indirect; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012424:Rural Population; D016036:Seroepidemiologic Studies; D014349:Trypanosoma cruzi / Q000276:immunology*
chemical_list: D000913:Antibodies, Protozoan