What does polio mainly affect ?

Motor neurons: Polio is a disease caused by a specific virus that attacks specific types of nerve cells. No one understands why it is so selective. It can affect motor neurons on just one leg or the entire spine or even the diaphram affecting breathing. The disease causes a form of meningitis with fever and severe illness, but involved limbs remain weak and do not grow in normal manner.

None to Paralysis: Most people who get infected with Polo72% will have no symptoms and will recover completely 1 in 4 may have fever,sore throat,headche and nausea which may last for 2to5 days Smaler portion will have very serious symptoms due to involvement of Brain and Spinal cord causing Pins and needles in legs Meningitis in 1in25 Paralysis in arms and legs or both occurs 1 in 200,can lead to disability or death