India has been able to eradicate polio which used to cause disability to lakhs of people Prime Minister Manmohan Singh said on Thursday. 'No case of polio has been detected in the country in the last two years. We have been able to eradicate a disease which used to cause disability to lakhs of people' Manmohan Singh said in his Independence Day address from the ramparts of the Red Fort. What is polio? Polio or poliomyelitis is a communicable viral disease which affects the nerves and can lead to partial or permanent paralysis. It is transmitted through stool or saliva.