A long time! Not any more, though.
The virus has evolved with mankind or say mammals.
Post-polio syndrome occurs some decades after the original infection with polio.
PPS occurs in about 25% of patients, several decades after their original infection with polio. However, long-term follow-up indicates that two thirds of polio survivors may experience new weakness.
No. It is a set of neurologic symptoms which exist long after polio, itself, is experienced by the sufferer.
Last one? Polio is still problematic. We are working on ridding the world of this disease. Source: http://www.polioeradication.org/disease.asp
12 years
No. It is a set of neurologic symptoms which exist long after polio, itself, is experienced by the sufferer.
I was vaccinated for Polio as a child in the mid 1950's. I am 62 yrs. old now--am I still immuned to contracting ?Polio
Polio primarily affects the nervous system and can lead to paralysis, but it does not directly cause cognitive impairment or retardation. However, severe cases of polio that result in long-term disability and complications might indirectly affect a person's development and educational opportunities. It's important to note that cognitive outcomes can vary based on individual circumstances and the extent of the disability. Vaccination has been effective in preventing polio and its associated complications.
90 days
For as long at there have been people and disasters.
As long as people have been using words.