Sept 8 (Reuters) - Royal Dutch Shell Plc is weighing whether to mandate vaccines for employees and firing those who refuse to comply, the Financial Times reported https://www.ft.com/content/a4edfefb-4fba-46d9-bef3-2cfdba57bdb3 on Wednesday. (Reporting by Arathy S Nair in Bengaluru; Editing by Amy Caren Daniel)