Bollywood megastar and UNICEF goodwill ambassador Amitabh Bachchan is happy with the drop in numbers of polio-affected children in India and hopes that the country will get totally free from the disease.

"For one whole year for the first time since I took over the brand Ambassador of Polio UNICEF campaign, we have zero cases in India. Feel proud and delighted that finally our efforts have been successful. Started in 2002, with over 1000 cases and today just one in West Bengal," Amitabh posted on micro-blogging site Twitter.