Q. Consider the following pairs:
DiseasePathogenPrimary Mode of Transmission
1. TuberculosisMycobacterium tuberculosisContaminated water and food
2. DiphtheriaCorynebacterium diphtheriaePerson to person through respiratory droplets
3. CholeraVibrio choleraeAirborne particles and spores
4. TyphoidSalmonella typhiContaminated drinking water and food
How many of the pairs given above are correctly matched?

[A] Only one pair

[B] Only two pairs

[C] Only three pairs

[D] All four pairs

Answer: B
Notes:

Explanation:

  • Pair 1 is incorrectly matched: While the pathogen is correct, Tuberculosis is an Air-borne disease, not spread through contaminated food/water.
  • Pair 2 is correctly matched: Diphtheria is a serious infection caused by strains of bacteria that make a toxin. It spreads easily through respiratory droplets (coughing or sneezing).
  • Pair 3 is incorrectly matched: Cholera is a Water-borne disease caused by ingestion of contaminated food or water. It is not airborne.
  • Pair 4 is correctly matched: Typhoid (Enteric Fever) is spread through the feco-oral route, primarily via contaminated water or food handled by an infected person.
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