African Trypanosomiasis Home>Conditions_and_Diseases>Infectious_Diseases>Parasitic>African Trypanosomiasis     Web Pages African Trypanosomiasis Detailed information from the World Health Organization. Trypanosomiasis Information about two forms of Trypanosoma brucei, which afflicts over 66 million people in 36 countries of sub-Saharan Africa. Division of Parasitic Diseases - Trypanosomiasis Information about the East African and West African forms of Trypanosomiasis from the U.S. Centers for Disease Control and Prevention. Sleeping Sickness Bug Swallowed a Plant Article suggests that an ancient ancestor of trypanosomes merged with a type of green algae.