The National Immunisation Programme in Ireland, which includes the influenza immunisation programme, is based on the advice of the National Immunisation Advisory Committee (NIAC). The committee's recommendations are based on the prevalence of the relevant disease in Ireland and international best practice in relation to immunisation. NIAC make recommendations on vaccination policy to the Department of Health.NIAC continue to revise recommendations to allow for the introduction of new vaccines in Ireland and to keep abreast of changes in the patterns of disease. Therefore, the immunisation schedule will continue to be amended over time.For the 2023/2024 flu season, the flu vaccine will be available free of charge to adults over 65 years, individuals in specified at-risk groups and children aged from 2 to 12 years. This approach ensures that those most vulnerable to the effects of influenza will have access to the flu vaccination without a charge.