CBSE Class 9 Answered

There are three limitations of treating an infectious disease, which are as follows:

i) Once someone has a disease, their body functions are damaged and may never recover completely.

ii) Treatment takes time, which means that someone suffering from a disease is likely to be bedridden for some time even if we can give proper treatment.

iii) The person suffering from an infectious disease can serve as the source from where the infection may spread to other people. This leads to the multiplication of the above difficulties.

It is because of such reasons that prevention of diseases is better than their cure.