Insect control with insecticides and houses that are less likely to have high insect populations will help control the spread of the disease.
Blood banks in Central and South America screen donors for exposure to the parasite. The blood is discarded if the donor tests positive. Most blood banks in the United States began screening for Chagas disease in 2007.
Kirchhoff LV. Trypanosoma species (American trypanosomiasis, Chagas' disease): Biology of trypanosomes. In: Mandell GL, Bennett JE, Dolin R, eds. Principles and Practice of Infectious Diseases. 7th ed. Philadelphia, Pa: Elsevier Churchill Livingstone; 2009:chap 277.
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