Multiple choice Which of the following diseases is caused by Leishmania in man? sleeping sickness kala-azar amoebiasis dengue fever Reveal answer Fill a bubble to check yourself B Correct answer Explanation Leishmania donovani causes visceral leishmaniasis, commonly known as kala-azar or black fever. Sleeping sickness is caused by Trypanosoma, amoebiasis by Entamoeba histolytica, and dengue fever by a flavivirus.