Developing world's parasites, disease hit U.S.

Parasitic infections and other diseases usually associated with the developing world are cropping up with alarming frequency among U.S. poor, especially in states along the U.S.-Mexico border, the rural South, and in Appalachia, according to researchers. Government and private researchers are just beginning to assess the toll of the infections, which are a significant cause of heart disease, seizures, and congenital birth defects among black and Hispanic populations.<