(Duh.)
http://www.nature.com/news/gut-microbial-enterotypes-become-less-clear-cut-1.10276

diarrhea is not a disease, it is as symptom
( notes )

GENERAL
highly contagious ectoparasitic skin infection
mite: Sarcoptes scabii
makes superficial burrows in epidermis entering via hair follicles, lays eggs, has babies
worse in immunocompromised, malnourished, elderly or institutionalized individuals
Wikipedia says the Norwegian strain is worst (???)
no vaccine available
( notes )

not to be confused with African trypanosomiasis which is caused by T. brucei gambiense and T. brucei rhodesiense and transmitted by Tse Tse flise
( notes )

New science indicates that Chagas infection in humans is at least 4500 years old if not 9000, and that infection occurred before domicilization of triatomine insects. Two types of T. cruzi display distinct characteristics and may one type appears to be transmitted orally, resulting in severe disease in children.
( notes from a letter to the editor by several Brazilian docs of the Oswaldo Cruz Foundation in Rio de Janeiro )

including: AMOEBAE, FLAGELLATED PROTOZOA and SPOROZOA
( these notes integrated June 2012 )

(  there are three types of parasitic worms, here I have covered only the ones in the board review book, assimilated into black book 2012 )