Which of the following pair of human disease - microorganism - mode of transmission is correct?
I. Tuberculosis - Virus - Air
II. Chicken Pox - Virus - Water/Food
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) - Neither I nor II
Chickenpox is indeed caused by a virus (Varicella-zoster virus), and it spreads through airborne respiratory droplets when an infected person coughs or sneezes not through water and food. Therefore, option II is incorrect.
Option I is incorrect because tuberculosis is caused by bacteria (Mycobacterium tuberculosis) rather than a virus, and it primarily spreads through the air when an infected person coughs or sneezes. Therefore, the mode of transmission for tuberculosis is air, not water or food.