Amitabh Bachchan was recently appointed the UNICEF ambassador of the hepatitis B awareness campaign. The actor is also associated with raising awareness about polio and TB. He is the ambassador of the government's polio awareness campaign called 'Do Boond Zindagi Ke' and TB awareness campaign called 'TB Harega Desh Jeetega' campaign. On Monday Bachchan opened up about his tryst with hepatitis B. He said he was an acute patient of the disease and lost 75% of his liver due to late diagnosis. Speaking during an awareness campaign of the disease he said that he picked up the infection when he