- Protozoan parasite Trypanosoma cruzi causes American trypanosomiasis (Chagas’ disease).
- Transmitted in rural Latin America when feces of infected "kissing bug" (species Rhodnius or triatomine bug, [Fig 1]) inoculated through an insect bite wound or mucous membrane exposure.
- Also present in zoonotic reservoirs/insect vectors in the southern U.S. but transmission to humans is rare.
- See the Life cycle.
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