Question

Leishmania donovani causes this disease in man (లిష్మేనియా డోనోవనీ వలన మానవునిలో కలిగే వ్యాధి):

• A. Kala azar
• B. Delhi boils
• C. Elephantiasis
• D. Oriental sores

Hint:

Remember: \[ \textit{Leishmania donovani} \rightarrow \text{Kala-azar} \] and the vector is the sandfly.

Answer 1

The Correct Option is A

Concept: Different protozoan parasites cause different diseases in humans. Identification of the disease caused by a pathogen is an important topic from Human Health and Disease.

Step 1: Identify the organism given in the question.
The organism mentioned is \[ \textit{Leishmania donovani} \] which is a flagellated protozoan parasite.

Step 2: Recall the disease caused by this parasite.
\[ \textit{Leishmania donovani} \longrightarrow \text{Kala-azar} \] Kala-azar is also called \[ \text{Visceral Leishmaniasis} \]

Step 3: Check the remaining options.
\[ \begin{aligned} \text{Delhi boils} &\rightarrow \textit{Leishmania tropica}\\ \text{Elephantiasis} &\rightarrow \textit{Wuchereria bancrofti}\\ \text{Oriental sores} &\rightarrow \textit{Leishmania tropica} \end{aligned} \] Therefore these options are incorrect.

Step 4: Select the correct option.
Hence, \[ \boxed{\text{Kala-azar}} \] is the disease caused by \[ \textit{Leishmania\ donovani} \] Therefore, \[ \boxed{\text{Option (A)}} \] is correct.