Trudging up miles of rugged snow-covered inhospitable terrain of the trans-Himalayas just to administer two drops of polio to tiny tots in the interiors of Himachal Pradesh is to put it mildly a mountainous task. Health officials say their staff will have to traverse at least three days on foot from the road-head to the remotest hamlet in Kangra district for the nationwide-intensified Pulse Polio Immunisation (IPPI) programme on Jan 19-21. 'For reaching Bara Bhangal the health staff has to start the journey from Baijnath sometimes three-four days in advance' Chief Medical Officer Dhruv Gurung told IANS Sunday. The journey