[Seroprevalence of Chagas disease infection in the State of Piauí, 2002].
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.
Borges-Pereira
José
J
Departamento de Medicina Tropical, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil. borges@ioc.fiocruz.br
de Castro
José Adail Fonseca
JA
da Silva
Arlete Gonçalves
AG
Zauza
Patrícia Lago
PL
Bulhões
Tiago Pires
TP
Gonçalves
Maria Elizabete
ME
de Almeida
Ernani Saraiva
ES
do Amparo Salmito
Maria
M
Pereira
Lucia Regina Montebello
LR
Alves Filho
Francisco Itamar
FI
Correia-Lima
Fernando G
FG
Coura
José Rodrigues
JR
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*
D000913:Antibodies, Protozoan