ANATOMY

Detailed explanation-1: -Polio is an illness caused by a virus that mainly affects nerves in the spinal cord or brain stem. In its most severe form, polio can lead to a person being unable to move certain limbs, also called paralysis. It can also lead to trouble breathing and sometimes death. The disease also is called poliomyelitis.

Detailed explanation-2: -Polio, or poliomyelitis, is a disabling and life-threatening disease caused by the poliovirus. The virus spreads from person to person and can infect a person’s spinal cord, causing paralysis (can’t move parts of the body).

Detailed explanation-3: -Polio, or poliomyelitis, is a disabling and life-threatening disease caused by poliovirus. The virus spreads from person to person and can invade an infected person’s spinal cord, causing paralysis (can’t move parts of the body).

Detailed explanation-4: -The incubation period for nonparalytic poliomyelitis is 3 to 6 days. For the onset of paralysis in paralytic poliomyelitis, the incubation period is usually 7 to 21 days. The risk of severe disease and death following primary infection with poliovirus increases with increasing age.

Detailed explanation-5: -There are three individual and immunologically-distinct wild poliovirus strains: wild poliovirus type 1 (WPV1), wild poliovirus type 2 (WPV2) and wild poliovirus type 3 (WPV3). Symptomatically, all three strains are identical, in that they cause irreversible paralysis or even death.