Incidence of Trypanosoma cruzi (Chagas) in Wild Vectors and Reservoirs in East-Central Alabama

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Abstract
Trypanosoma cruzi (Chagas) was isolated from 17 of 126 (13.5%) opossums and 5 of 35 (14.3%) raccons from east-central Alabama. Inoculation of blood, heart muscle, kidney tissue, urine, and peritoneal fluid from survey animals into NNN or Chang''s medium showed that the organism was most often isolated from heart muscle followed by blood, kidney, peritoneal fluid, and urine. The trypanosome was recovered from 11 of 181 (6%) triatomid bugs collected in the same area. Of the 44 collections, 32 were from hollow trees or stumps, 10 were from human habitations, and 2 from the quarters of domestic animals. In some instances, both infected vectors and reservoirs were found in heavily populated areas.

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