Poliomyelitis (polio) is viral infection. It is now extremely rare in the Western world due to very effective vaccination programs.

Polio is still a significant problem in parts of Africa and Asia. The infection can lead to paralysis.

Polio is caused by the poliovirus. You can get the virus from contact with:

  • An infected person
  • Infected saliva or feces
  • Contaminated water or sewage

The virus enters the body through the mouth and travels to the intestines. There the virus grows and spreads quickly. The virus can also travels through the blood and lymph fluid. It can then attack and destroys areas of the nervous system which leads to a loss of control of muscles and paralysis.

Interaction of Lymph, Blood Vessels, and Intestines
Lymph and vessels in Abdomine
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