Discussion
Match the following human diseases in Column-I with their causal organism in Column-II
| Column-I | Column-II |
|---|---|
| P. Sleeping sickness | 1. Trypanosoma cruzi |
| Q. Chagas disease | 2. Trypanosoma brucei |
| R. Elephantiasis | 3. Borrelia burgdorferi |
| S. Lyme disease | 4. Wuchereria bancrofti |
| 5. Rickettsia rickettsii |
Answer: D
The correct match is P-2 ; Q-1 ; R-4 ; S-3.
- African sleeping sickness is caused by Trypanosoma brucei, spread by the tsetse fly.
- Chagas disease, in the Americas, is caused by Trypanosoma cruzi, spread by triatomine (kissing) bugs.
- Elephantiasis (lymphatic filariasis) is caused by the nematode Wuchereria bancrofti, spread by mosquitoes.
- Lyme disease is caused by the spirochaete Borrelia burgdorferi, spread by ticks.
Rickettsia rickettsii causes Rocky Mountain spotted fever and matches none of the four. The option with P-2 but Q-4 and R-1 swaps the filarial worm and T. cruzi, and the others misplace the trypanosomes.
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