Chagas disease is a parasitic infection that occurs in Central and South America. It is usually spread by the feces of the reduviid bug that infests mud, adobe, or thatch houses. It is infectious in humans, but some may not become ill until many years after infection, You can find more information here: dhpe.org/infect/Chagas.html.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.