What is the prognosis (outlook) for patients who have acute flaccid myelitis (AFM)?

What is the prognosis (outlook) for patients who have acute flaccid myelitis (AFM)?

The long-term outlook for patients with AFM is not known. It is possible that the prognosis for people with mild AFM symptoms might be better than the outlook for someone with severe symptoms. Some people may recover fully and quickly. Most people have muscle weakness that lingers for a long time.