Chagas disease transmission humans

Several transmission mechanisms exist for Chagas disease in humans including transfusions, congenital factors, oral or buccogastric transmission, and principally, via vectors. This last via occurs when humans are bitten by infected insects, mainly triatomines such as T. infestans, which defecate on the skin. When the individual scratches the location of the bite, the contaminated insect feces enter the bloodstream. 

VIII. TRANSMISSION OF CHAGAS DISEASE BY THE ORAL ROUTE IN HUMANS... 

Ferreira, C. S., Amato Neto, V., Gakiya, E., Bezerra, R. C., and Rodriguez Alarcon, R. S. (2003). Microwave treatment of human milk to prevent transmission of Chagas disease. Rev. Inst. Med. Trop. Sao Paulo 45(1), 41-42. 

Soon afterwards, another problem attracted their attention, the possibility of transmission of Chagas disease by blood transfusion. Impressed by Paul de Kruiff s wonderful book Microbe Hunters, Ruth and Victor tried to sterilize the blood destined for transfusion by incubating it with Gentian Violet, a dye that had been used to treat Strongyloides stercoralis infestations in humans. Once success was achieved, the thrill of the daily experimentation sealed their decision to pursue research careers. 

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