Poliomyelitis (polio) invades the nervous system and can cause total paralysis, typically in the legs (limbs), in a small percentage of cases.

A. It affects both young and old. While anyone who is unvaccinated can contract polio, it mainly affects children under 5 years of age.

B. It is a bacterial disease. Polio is a highly contagious viral disease caused by the poliovirus.

C. There is no vaccination against the disease. Polio is preventable by effective vaccines, which have reduced cases by over 99% globally.