The Health Ministry said the discovery did not reflect a resurgence of polio in India, which was declared free of polio in 2014. "It has been more than five years that no wild polio has been detected." A city of nearly 7 million people in southern India has declared a "high alert" for polio after an active strain of the virus was found in samples of sewage water, an official said Wednesday. "India continues to be polio free as the country has eradicated wild polio virus," the ministry said in a statement, noting the last case was recorded in January 2011. The poliovirus detected last month in Hyderabad was a strain that had mutated from the vaccine itself, the ministry said.

Source: ABC News June 15, 2016 07:17 UTC