Chagas Disease - American Trypanosomiasis
Like African trypanosomiasis, Chagas Disease is spread by a trypanosome parasite. But unlike sleeping sickness, it is spread not directly by the bite of a fly but indirectly - as the infected reduviid fly feeds on its victim's blood, it defecates on the skin. Later, when the victim rubs the bite - typically near the eye - the infected material is rubbed into the bite.
Reduviid bugs are generally found living in the roofs - especially thatched roofs - of poor housing.
They come out at night, so prevention is aimed at both spraying for the fly, improving housing, and sleeping in bed nets. The reduviid bug: