Polio is one of such diseases, which make the humans helpless. We can say that it is a stage between the life and death. In many countries this disease is now e
Polio is such a disease in which virus attacks on the nervous system of the child. It is usually appeared at the age of 5.
There are also some types of polio, such as non-clinical polio, paralytic polio and last is non- paralytic polio.