title: [Evaluation of the sensitivity of the indirect immunofluorescence test at the 1:20 dilution in the diagnosis of Chagas disease].
abstract: Sera from people in the chronic stage of Chagas disease, whose infection had been parasitologically validated, were assayed by using the indirect immunofluorescence test to evaluated its performance at the 1:20 dilution. All tests were consistently positive at 1:20 and higher dilutions, even in the presence of concomitant infection with the human immunodeficiency virus (HIV). It is thus valid, into the light of this experiment, to take into account the remarkable sensitivity of such serological test at the above mentioned dilution.
authors.affiliation: Laboratório de Parasitologia, Instituto de Medicina Tropical de São Paulo, Brasil. amatnet@usp.br
authors.forename: Vicente
authors.initials: V
authors.lastname: Amato Neto
authors.forename: Cláudia Regina
authors.initials: CR
authors.lastname: De Marchi
authors.forename: Sandra Therezinha
authors.initials: ST
authors.lastname: Rossitto
authors.forename: Maria Savoia
authors.initials: MS
authors.lastname: Nascimento
mesh_terms: D014355:Chagas Disease / Q000175:diagnosis*; D019084:Fluorescent Antibody Technique, Indirect / Q000379:methods*; D006801:Humans; D007201:Indicator Dilution Techniques; D012680:Sensitivity and Specificity; D012698:Serologic Tests