" Perhaps the ghastliest disease endemic to mosquitia is Mucocutaneous Leishmaniasis, sometimes called white leprosy, caused by the bite of an infected sand fly. The Leishmania parasite migrates to the mucus membranes of the victim's nose and lips and eats them away, eventually creating a giant, weeping sore where the face used to be. "

― Douglas Preston , The Lost City of the Monkey God