Discussion
Consider the following pairs :
| Diseases | Causative agent | |
|---|---|---|
| 1. | Diphtheria | Bacteria |
| 2. | Measles | Fungus |
| 3. | Cholera | Virus |
| 4. | Kala-azar | Protozoan |
Which of the above pairs are correctly matched ?
Answer: C
Pairs 1 and 4 are correct, so the answer is 1 and 4 only.
Diphtheria is caused by a bacterium, Corynebacterium diphtheriae, and kala-azar (visceral leishmaniasis) by a protozoan, Leishmania donovani, spread by sandflies.
Measles is caused by a virus, not a fungus, and cholera by a bacterium, Vibrio cholerae, not a virus. So any option containing pair 2 or pair 3 is wrong.
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