Social & Preventive Medicine Polio is said to be eradicated if no case of polio by wild poliovirus occurs in an area for ? A 1 year B 2 years C 3 years D 4 years 💡 Explanation Polio is said to be eradicated if no case of polio by wild poliovirus occurs in an area for ? ✓ Correct Answer: C. 3 years