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(From The Times of India)
MUMBAI: The wild polio virus has been continuously found in the sewage water samples collected from Shivaji Nagar, Govandi, over the past few months, but the civic authorities are not unduly worried about new polio cases cropping up in the city as a result.
"Our immunisation programme is so extensive that everything is under control," says BMC's executive health officer Dr S Telang. On the eve of another pulse polio drive on Sunday, he says that there is almost no trace of the wild polio virus in other parts of the city.
Indeed, not every child who is exposed to the crippling virus will develop polio, provided he or she is …