Donors deferred for self-reported Chagas disease history: does it reduce risk?

Background: Current Food and Drug Administration guidance specifies that all blood donors must be asked about a history of Chagas disease.

Study Design And Methods: We identified all American Red Cross donors deferred for Chagas disease history from January 2000 to August 2011. Attempts were made to contact all deferred donors and invite them back for anti-Trypanosoma cruzi testing.