Megastar Amitabh Bachchan and his son, actor Abhishek Bachchan, who were admitted to a hospital here after testing positive for COVID-19, are responding well to the treatment, hospital sources said on Tuesday. Amitabh, 77, and Abhishek, 44, revealed their diagnosis on Twitter on July 11, saying they were in the isolation ward of Nanavati Hospital. Both are stable and are responding well to the treatment. They will have to be in the hospital for at least seven days. For more news updates keep watching Mumbai Metro.