Which of the following statements about poliomyelitis is correct?

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.

There is an explanation video available below.

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