The symptoms of polio can vary depending on the severity of the infection. In some cases, polio may cause no symptoms at all. However, in more severe cases, symptoms may include: 1. Fever 2. Fatigue 3. Headache 4. Sore throat 5. Stiff neck and back 6. Muscle weakness or paralysis, usually in the legs 7. Muscle pain or tenderness 8. Difficulty swallowing or breathing 9. Abnormal refle  Read More