The elearning course consists of 3 knowledge sessions and 3 assessment sessions. All those undertaking this elearning should complete the Core Knowledge session and accompanying assessment as this is designed to provide essential knowledge about what flu is and the rationale for, and design of, the annual flu programme. Depending on which session(s) is relevant to your role, you should then complete one or both subsequent knowledge and assessment sessions which provide more detailed information about the live and inactivated flu vaccines.