Protozoa are microscopic unicellular eukaryotes that have a relatively complex internal structure and carry out complex metabolic activities.
Leishmaniasis is a disease caused by parasites that belong to the genus Leishmania.
Leishmania is a dimorphic protozoan parasite that lives as flagellated forms in the gut of their sandfly vector and as aflagellated forms in their mammalian hosts.
Leishmaniasis is a vector-borne disease that is transmitted by sand flies and caused by obligate intracellular protozoa of the genus Leishmania.
Kala-azar disease is caused by a protozoan parasite called Leishmania Donovan. Because of the protozoa, the disease is also known as Leishmaniasis.