31.   Polio is a highly infectious disease that mainly affects children under the age of five.

32.   Polio is almost gone.

33.   Polio is highly infectious and attacks the nervous system, causing paralysis in a matter of hours.

34.   Polio is on the verge of following smallpox into history.

35.   Polio is rare in the West and in most developed Asian nations, but is widespread in South Asian countries with poor healthcare systems.

36.   Polio is a viral disease that usually strikes very young children, affecting the nervous system and often leading to paralysis, muscle atrophy and even death.

37.   Polio is a viral infection that spreads to the spinal cord and brain, causing paralysis and sometimes death.

38.   Polio is a viral infection that spreads to the spinal cord and the brain causing paralysis of the limbs and sometimes death.

39.   Polio is the inflammation of the gray matter of the spinal cord, causing paralysis of the limbs, especially among infants.

40.   Some of the countries have been free from polio for several years while in others polio is still endemic.