For more than two decades mankind has been dreaming of a “polio-free world.” However the dream is yet to be realized owing to various problems related to transmission of wild polio virus transmission as well as vaccine-derived polio virus. These problems are as much scientific as human. The article briefly discusses the current status of polio control across the globe, and various challenges associated with it in a nation-wise manner.
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in the way of India being removed from the list of countries with active transmission of wild poliovirus (WHO) . 
Dr. Soumyadeep Bhaumik 