TABLE 3.

Identification of Persons at Risk for Chagas Disease^*

Risk Group	Comment
Residence in Chagas-endemic region	Risk enhanced by potential prolonged exposure to triatomines
US residence in locales with vector or mammalian species infected with T. cruzi	Fewer than 30 locally infected persons identified; risk thought to be related to outdoor activities
Infant born to a mother with Chagas disease	Perform testing as soon as possible after birth
All children of a mother with Chagas disease	Perform testing because congenital transmission is a risk with every pregnancy
Adult with idiopathic cardiomyopathy	Perform diagnostic testing for those who have resided in Chagas-endemic regions

^*Adapted from Bern.¹⁹