Social & Preventive Medicine Definite case of Polio is considered if – A Paralysis is for more than 6 weeks B Antibody titre is more than 4 times of normal value C Demonstration of Polio virus in stool D Acute encephalitis with paralysis 💡 Explanation Definite case of Polio is considered if - ✓ Correct Answer: C. Demonstration of Polio virus in stool