Poliomyelitis, acute viral infection due to poliovirus, virus neuropatógeno transmitted by the digestive tract. The manifestations of this condition are varied.

The most frequent is that are present after an episode of diarrhoea febrile or sometimes totally non-apparent (polio-infection). You may receive a meningitis of clear liquid (polio non-paralytic) or a flaccid paralysis of various muscle groups (paralytic poliomyelitis) due to a virus attack, the horns above the cord.

These paralysis laxity acute are irreversible, fatal in some cases, and associated to muscle atrophy of the paralysed area.

Infection subclinical (95%)

  • Mild fever
  • General Malaise
  • Headache
  • Pain and redness of the throat
  • Vomiting

This group may not have symptoms or they may last less than 72 hours.

Clinical Infection :

Attacks the central nervous system and may be paralytic or non-paralytic. It can manifest after a subclinical infection.

Polio nonparalytic

  • Back pain (lumbago)
  • Excessive tiredness
  • Diarrhea
  • Headache
  • irritability
  • Pain calves
  • Moderate fever
  • Stiffness, tenderness and muscle spasms
  • Rash or lesion on the skin with pain
  • Vomiting

The symptoms last between 1 and 2 weeks.

Poliomyelitis paralytic

  • Fever 5 to 7 days before other symptoms
  • Abnormal sensations in an area
  • Abdominal distension
  • Breathing difficulty
  • Constipation
  • Difficulty starting to urinate
  • Drooling
  • Headache
  • Irritability
  • Spasms and muscle pain
  • Muscle weakness, asymmetrical (only one side)
  • Swallowing difficulty
  • sensitivity to touch


It is based on the control of symptoms while the infection develops, can need respiratory assistance.


The polio vaccine is effective in the majority of cases (effectiveness, efficiency about 90%)

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