Amitabh Bachchan: Bachchan, as an ambassador for Unicef, has promoted the eradication of measles and rubella infections in children. He has earlier been associated with various health campaigns such as polio, hepatitis B, tuberculosis and diabetes. In 2017 he tweeted: “My ambassadorship for Unicef extended for another two years after success of polio drive, now working for MR inoculation for kids.”