Spatial patterns in discordant diagnostic test results for chagas disease: Links to transmission hotspots

Abstract

Diagnosis of Chagas disease is hindered by discordance between screening and confirmatory test results for Trypanosoma cruzi infection. In periurban Arequipa, Peru, spatial analysis revealed that individuals with discordant test results are spatially clustered in hotspots of T. cruzi transmission, suggesting that discordant results likely represent true infections in this setting. © 2009 by the Infectious Diseases Society of America. All rights reserved.