“Kala-azar” in man is caused by:
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Trypanosoma gambiens
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Leishmania tropica
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Leishmania donovani
-
Entamoeba histolytic
C
Correct answer
Explanation
Kala-azar (visceral leishmaniasis) is caused by the protozoan parasite Leishmania donovani. It is transmitted through the bite of infected sand flies and affects internal organs like spleen, liver, and bone marrow, often proving fatal if untreated.