Poliomyelitis acute epidemic (a children's rachioplegia) the-sharp virus disease caused by a lesion of cells of forward horns of a spinal cord and kernels of impellent cranial nerves, leading development of flaccid paralyses with an areflexia and an atrophy of muscles.

Signs, current. The incubation interval averages 7-14 days. Then on a background of the general infectious and capsulate signs flaccid paralyses develop. Depending on prevalence of the amazed muscles allocate spinal and bulbar forms of illness. The most dangerous complication of a poliomyelitis-respiratory disturbances - can be caused or a paralysis of respiratory muscles, or a lesion of bulbar kernels. Their involving in process is sometimes accompanied by an arterial hypertensia or a hypotension, a tachycardia. On prevalence paralyses are very various: monotetraplegias with a various degree of involving in process of a bulbar musculation and a musculation of a trunk are observed. In a cerebrospinal liquid - a lymphocytic pleocytosis at the normal maintenance of fiber and a glucose; in 5 % of cases a liquid normal.