If the person was injured just before the weakness of the person has a history of being mentally retarded, then polio is not likely to be the cause of the weakness.
Xa umntu ebekhe wafumana umonzakalo ngaphambi kokuba buthathaka okanye ingumntu onembali yokuphazamiseka engqondweni ipoliyo ayisayi kubonwa njengonobangela wobu buthathaka.