This list includes many of the common large shrubs of Canada, as well as the trees.any of the trees on this list are introduced as ornamentals or for food and are not common in Canada.
Human African Trypanosomiasis (HAT), also called African sleeping sickness, is a parasitic disease that is transmitted by infected tsetse flies. HAT can occur as a chronic or acute infection depending on the sub-species of parasite responsible for the infection.
The West African form of sleeping sickness usually causes death in two or three years; in some cases, the patient develops a tolerance to the infection and may continue to live for many years as a carrier of the parasites. Diagnosis and treatment. The earlier that sleeping sickness is diagnosed and treated, the greater the chances for recovery. Diagnosis is made by microscopic examination of blood and lymph for the presence of trypanosomes and of cerebrospinal fluid for increased levels of white blood cells.