Polio is caused by a viral agent.,
Close - poliomyelitis is a viral infection affecting the gray matter of the spinal cord.
Poliomyelitis of as its commonly known "polio" is a virus
poliomyelitis
Poliomyelitis
Poliomyelitis
Acute Anterior Poliomyelitis. It is a viral disease.
MRSA is a form of staph. Staph is bacterial
Rabies is viral.
Spanish flu is viral.
Poliomyelitis
viral and bacterial
Cold sores are a viral illness. They are caused by herpes simplex virus.