6. Under which of the following conditions are you most likely to
fall sick?
(a) when you are taking examinations.
(b) when you have travelled by bus and train for two days.
(c) when your friend is suffering from measles.
Why?
Answers
We are most likely to fall ill when our friend is suffering from measles.
As we know that measles is a communicable disease caused by a virus and can spread from one person to another through air. So, we can conclude here that measles is an airborne disease.
If we meet the person infected with measles, tiny droplets of liquid containing virus come out from the mouth or nose. When a healthy person breathes in droplet - containing air, these organisms enter his/her body. This method of transmission of disease by droplets is called droplet infection.
So, the correct option is (c).
Some other airborne diseases are
common cold, influenza, tuberculosis etc.
Some Extra Information:-
Communicable disease : An infectious disease that can be spread from one infected individual to another is called a communicable disease.
An infectious disease can be spread from an infected person to a healthy person in many ways such as through food, water, air,direct contact, vectors etc.