A certain virus causes polio. You can get polio if you have contact with:
Someone else who has it
Infected saliva or stool
Contaminated water or sewage
The virus enters the body through the mouth and travels into the bowels. It grows and spreads quickly. The virus can also travel through the blood and lymph streams. From there, it can attack and damage parts of the nervous system. This can lead to loss of muscle control and paralysis.
Interaction of Lymph, Blood Vessels, and Intestines
Getting the polio vaccine is the best way to stop the disease. Most adults received this vaccine when they were children. If you’re at high risk for getting polio, you may need a booster vaccine. High risk includes:
Traveling to places where polio is common
Caring for people with polio
Working in labs where the polio virus is handled
The number of doses that you need depends on how many you've had in the past. Talk to your doctor if you are at high risk.
Poliomyelitis. Merck Manual Professional Version website. Available at: https://www.merckmanuals.com/professional/infectious-diseases/enteroviruses/poliomyelitis. Updated February 2018. Accessed May 22, 2018.
Poliomyelitis (polio). World Health Organization website. Available at: ...(Click grey area to select URL) Accessed May 22, 2018.