Chennai, Jan 08 (ANI): Union Health Minister Dr Harsh Vardhan on January 08 announced 3-day national immunisation drive for Polio Miletus. The drive will begin from January 17, followed by another three days of tracing the left out children. “Because of the presence of Polio Miletus in two of our neighbouring countries, our population always remains at risk. Three-day national immunisation drive for Polio will begin on January 17. Followed by another two-three days when we go back and search for those left out children in the society. This is essential to maintain the overall immunity level of our country particularly pertaining to polio,” said Health Minister Dr Harsh Vardhan.