📖 what
What is polio?
MedicineViral disease
Quick Answer
Polio is a viral disease that can infect the nervous system and cause paralysis. Most infections are mild, but a small number can lead to permanent disability.
The Full Story
Polio is caused by poliovirus, which spreads mainly through contaminated food, water, or direct contact. In severe cases, the virus damages motor neurons and can cause weakness or paralysis, often in the legs. The development of the Salk vaccine in 1955 and the oral Sabin vaccine in the early 1960s transformed public health. Thanks to vaccination campaigns, wild poliovirus is now endemic in only a very small number of countries, though eradication has not yet been completed.
Key Facts
1.Polio can cause irreversible paralysis
2.The Salk vaccine was licensed in 1955
3.Wild polio now survives in only a few endemic countries
YouTube Angle
Suggested video title for this topic:
"How vaccines pushed polio to the brink of eradication"