Keywords:
Protozoal diseases
Trypanosomiasis, African
Trypanosoma brucei
Trypanosoma evansi
Trypanosoma congolense
Drug therapy
Trypanocides
DFMO
Eflornithine
Suramin
Melarsoprol
Diminazene aceturate
Pentamidine
Isometamidium chloride
Homidium
Nifurtimox
Megazol
Drug resistance
Cross-resistance
Review of the literature