The Main Stream Media (MSM) did not tell people that the person (a young adult) who recently contracted Polio in the USA developed paralysis, and that most cases are asymptomatic. More HERE.
This suggests there are many more people out there in New York infected with the poliovirus, as most are asymptomatic.
They have known that Polio is back in the community after observing it for a good month in the sewerage.
Polio (also known as poliomyelitis) is a highly contagious disease caused by a virus that attacks the nervous system. Children younger than 5 years old are more likely to contract the virus than any other group. This is because the polio virus enters the body through the mouth, usually from hands contaminated with the stool of an infected person. Respiratory and oral-to-oral transmission through saliva may also occur.
Polio can also spread through droplets when an infected person sneezes or coughs. These droplets can also become airborne, so if there is a polio outbreak we should wear masks to be safe.
About 95 to 99% of people with polio are asymptomatic*, but they can still infect others even with no symptoms. This is called subclinical polio. The virus largely lives in your intestinal tracks and causes paralysis when it enters the spinal cord and brain stem. The paralysis could be just the legs or include the torso and lungs as well. In the 1950s they put people in iron-lungs, so they could breathe as they lung muscles had collapsed. The idea was to change the pressure inside the iron-lung so that it would inflate and deflate your lungs.
Read more about how the iron lung works, HERE.
Young children less than 5 years of age are more likely to contract the poliovirus than any other group because the main means of spread is through faecal contamination.
About 1 percent of polio cases can develop into paralytic polio. Paralytic polio leads to paralysis in the spinal cord (spinal polio), brainstem (bulbar polio), or both (bulbospinal polio).
In 5–10 percent of the polio paralysis cases, the virus will attack the muscles that help you breathe and cause death. This is when the iron-lungs were used to try to save people from dying.
Paul Alexander contracted paralytic polio at age six in 1952 and has lived in an iron lung for 70 years. MORE HERE.
Polio can return 15 to 40 years after you have recovered. This is called Post-Polio Syndrome. This generally involves muscle pain, muscle weakness, muscle atrophy and even difficulty in breathing and swallowing.
*) Some medical texts put the asymptomatic at 70% and include people with mild polio I presume. Mild polio symptoms are typically flu-like: fever, sore throat, headache, vomiting, fatigue and meningitis. Symptoms can last from 1 to 10 days.
note added 9 August 2022
The man who developed polio in New York is in his 20s and had been travelling in Europe. The polio he contracted is from the Sabin oral vaccine which contains a benign poliovirus. The oral vaccine was stopped because there was concern it might mutate one day go wild and start paralysing people. And this is exactly what has happened here. The man was diagnosed with polio after he developed paralysis in his legs. More HERE.