Chronic Phase of Chagas Disease (Indeterminate Form)

During the chronic phase, most patients are unaware of their infection status and have no signs or symptoms of Chagas disease (designated the indeterminate form of chronic Chagas disease).

Most chronically infected persons remain indeterminate (asymptomatic) for life.

However, approximately 20% to 30% of T. cruzi-infected persons progress to clinical manifestations characteristic of Chagas disease (determinate forms) over the course of their lifetimes.